How fast is the universe expanding? The mystery endures
Scientists have known for decades that the universe is expanding, but research in the past few years has shaken up calculations on the speed of growth -- raising tricky questions about theories of the cosmos.
Galaxies come in all shapes and sizes, and the galaxies most pleasing to the eye are always in the most recognizable shapes. Messier 110 is what is known as an elliptical galaxy . It doesn’t have well-formed features, and it’s not a swirling mass of eye candy. It’s just a big blob of stars hanging out
Galaxies come in all shapes and sizes, and the galaxies most pleasing to the eye are always in the most recognizable shapes. Dramatic spirals with outstretched arms, bursting with newborn stars are…
Galaxies come in all shapes and sizes, and the galaxies most pleasing to the eye are always in the most recognizable shapes. Dramatic spirals with outstretched arms, bursting with newborn stars are always a jaw-dropping sight, after all. Messier 110 is most definitely not in that group.
Messier 110 is what is known as an elliptical galaxy. It doesn’t have well-formed features, and it’s not a swirling mass of eye candy. It’s just a big blob of stars hanging out around the nearby Andromeda galaxy. As far as galaxies go, it’s rather small, but NASA’s Hubble Space Telescope has a certain knack for making even “small” destinations in space look larger than life.
Should You Buy Apple's IPhone 11 Pro Or Samsung's Galaxy Note 10?
If you, like me, are on the Apple bandwagon, it’s time to start thinking about the next phone you’re going to buy now that Apple has debuted the iPhone 11 and iPhone 11 Pro. But there are plenty of other great phones that don’t start with an “i,” too. If you’re looking to spend big on your next device, I expect a decision you might find yourself contemplating is which of the biggest, most feature-packed high-end phones in the conversation you should go with: the iPhone 11 Pro or Samsung’s Galaxy Note 10 (or their larger “Max” and “Plus” versions). So, let’s see how they stack up.
Spiral galaxies comprise the majority of galaxies in space at over 75 percent. Our own Milky Way galaxy was thought to be one until the 1960s, when it was reclassified as a barred Hubble 's surveys of disc galaxies aim to explore the relationship between these black holes and their local galaxies .
New images from the Hubble Space Telescope show two beautiful planetary nebulae, known as the Butterfly Nebula and the Jewel Bug Nebula. “As I was downloading the resulting images, I felt like a kid in a candy store.” Both nebulae have structures within them caused by the death throes of stars.
© Provided by Penske Media Corporation Not So Dead After All
As NASA explains, this photo of Messier 110 reveals the galaxy’s true personality. It’s not particularly flashy or fun, but it is absolutely packed with stars, and while there are no obvious star nurseries to be seen, scientists think new stars are still being born here.
Here’s what NASA had to say:
Because they lack stellar nurseries and contain mostly old stars, elliptical galaxies are often considered “dead” when compared to their spiral relatives. However, astronomers have spotted signs of a population of young, blue stars at the center of Messier 110 — hinting that it may not be so “dead” after all.
Related Slideshow: A look at the universe through Hubble Space Telescope (Provided by Photo Services)
3 dead as speedboat trying to set record crashes off Venice
Italian firefighters say three people aboard a speedboat have been killed when their vessel crashed into an offshore dike of the lagoon city of Venice. The crash on Tuesday night also badly injured a fourth person aboard. Italian speedboat race officials say the boat was trying to set a speed record for the route from Monte Carlo, a Mediterranean port in Monaco, to Venice. They said the motorboat had begun the undertaking Monday morning and was allowed one fuel step as part of rules for record setting. Dead in the crash were an Italian and two Britons. The injured man is Italian.
The Calabash Nebula is also sometimes called the “Rotten Egg Nebula” due to the fact that it contains a large amount of sulphur. It’s located over 5,000 light-years away, which isn’t exactly in our backyard, but Hubble was able to capture the stunning photo thanks to the use of powerful filters to separate the
Feast your eyes on this ‘ dead ’ nearby galaxy , thanks to Hubble .
-
The Hubble Space Telescope has been mankind's eyes into the ever-expanding universe for the last 25 years. The telescope has been responsible for capturing some of the most breathtaking images of the universe ever seen.
Join us as we take a look at the universe's stellar tapestry with some of the iconic images from the earth-orbitting observatory.
Pictured: Butterfly Emerges from Stellar Demise in Planetary Nebula NGC 6302. What resemble the creatures dainty wings are actually roiling cauldrons of gas heated to more than 36,000 degrees Fahrenheit. The gas is tearing across space at more than 600,000 miles an hour—fast enough to travel from Earth to the Moon in 24 minutes!
-
A view of the planet Jupiter, taken June 27, 2019, and part of the yearly study called the Outer Planets Atmospheres Legacy program (OPAL), is shown in this composite photo released on Aug. 8, 2019.
Within Months, 6 Quiet Galaxies Became Blazing Quasars And Scientists Don't Know How
Compared to our brief human lives, we tend to think of events on galactic scales as ones that happen extremely slowly. But that's not always the case.In a spectacular fashion, six galaxies have just undergone a huge transformation in a matter of mere months. They've gone from relatively peaceful galaxies to active quasars - the brightest of all galaxies, blasting vast amounts of radiation out into the Universe.
Hubble Peers at Galactic Cherry Blossoms. The galaxy NGC 1156 resembles a delicate cherry blossom tree flowering in springtime in this Hubble Feast your eyes on this ‘ dead ’ nearby galaxy , thanks to Hubble . Galaxies come in all shapes and sizes, and the galaxies most pleasing to the eye
Dwarf elliptical galaxies are normally considered ‘ dead ’ because they lack star formation and usually contain mostly old stars. Hubble is set to be replaced in 2021 by a state-of-the-art successor called the James Webb Space Telescope, which will take on the remit of studying the formation of stars and
-
This photo, made available by NASA on March 28, 2019, shows the asteroid (6478) Gault gradually self-destructing itself. It is spinning fast and the dusty material ejected from the surface has formed two long, thin, comet-like tails. The longer tail stretches more than 500,000 miles (800,000 km) and is roughly 3,000 miles (4,800 km) wide. The shorter tail is about a quarter as long. The streamers will eventually disperse into space.
-
Ultraviolet radiation and stellar winds from a giant star called Herschel 36 push through the dust in curtain-like sheets in the Lagoon Nebula, a stellar nursery, located 4,000 light-years away, in this image obtained on Sept. 26, 2018.
Giant telescope project in Hawaii delayed by protests
Anger is brewing on the Big Island of Hawaii over plans to build a giant telescope on a dormant volcano that is highly sacred to the region's native population. Some question whether one more telescope -- albeit a giant one -- would make such a big difference. The answer is a resounding "yes" from opponents.- 'Enough is enough' -"I talked to the leaders of the opposition and they made it real clear that not only is it too big, but it's just one too many," said Greg Chun, executive director of Mauna Kea stewardship at the University of Hawaii. "They tell me we have shared this mountain long enough. Enough is enough.
-
This Sept. 26, 2018, image shows bright blue gas threading through the galaxy IC 4870 that shines because it emits radio wave and gamma-ray radiation.
-
A cluster of young stars resembles an aerial burst, surrounded by clouds of interstellar gas and dust, in nebula NGC 3603 located in the constellation Carina, in this image captured in August 2009 and December 2009, and obtained on Sept. 26, 2018.
Sony Xperia 6 will share this crucial feature with the Samsung Galaxy S11
Sony's should feature the same Snapdragon 865 processor as the Samsung Galaxy S11According to Japanese outlet AndroPlus, Sony is experimenting with a new smartphone powered by a mysterious Qualcomm processor bearing the model number SM8250, which is widely believed to be associated with the Snapdragon 865.
-
NASA's Hubble Space Telescope has trained its razor-sharp eye on one of the universe's most stately and photogenic galaxies, the Sombrero galaxy, Messier 104 (M104). The galaxy's hallmark is a brilliant white, bulbous core encircled by the thick dust lanes comprising the spiral structure of the galaxy.
-
The image was released by NASA to mark 400 years of telescope. It was in 1609, that the first telescope was used to peek into space by Galileo. The images of the galactic center region were released to various planetariums, museums, nature centers, libraries, and schools across the US to mark the occasion.
-
Globular star cluster Omega Centauri (NGC 5139) located in the Centaurus constellation can be seen in this image provided by NASA, ESA.
-
This image, released for Hubble's 17th anniversary, shows a region of star birth and death in the Carina Nebula. The nebula contains at least a dozen brilliant stars that are 50 to 100 times the mass of our Sun.
-
Star forming pillar of gas and dust called the Cone Nebula (NGC 2264). This is the clearest image of distant universe ever seen by man.
Scientists think there might be a black hole orbiting the sun
There's something out there, and this new theory might explain why we haven't found it yet.There's evidence of a ninth planet beyond the orbit of Neptune - scientists can see its gravitational effects on the orbits of dwarf planets like Pluto and other objects in the distant Kuiper Belt.
-
The image was released on the 15th anniversary of the Hubble Space Telescope on April 25, 2005. The image taken by Advanced Camera Surveys (ACS) is one of the largest and sharpest images taken by the telescope. The new image is so incredibly sharp they could be enlarged to billboard size and still retain all of their stunning details.
-
This image, released on the 15th anniversary of Hubble Space Telescope, shows the Eagle Nebula. This was one of the sharpest images ever taken by the telescope.
-
This is the most detailed visible-light image of the surounding areas of the star Fomalhaut (not visible in the image). In the image, the narrow dusty rings can be easily seen surrounding the star.
-
The image was taken by the newly installed Wide Field Camera 3 (WFC3) aboard NASA’s Hubble Space Telescope. As the name implies, Stephan’s Quintet is a group of five galaxies.
-
This turbulent cosmic pinnacle lies within a tempestuous stellar nursery called the Carina Nebula, located 7,500 light-years away in the southern constellation Carina. The image celebrates the 20th anniversary of Hubble's launch and deployment into an orbit around Earth.
-
In this image taken by Hubble's Wide Field Planetary Camera 2, a third red spot appeared on the surface of Jupiter. The other two spots- Great Red Spot and Red Spot Jr. can also be seen in the image.
Alien 'Lurkers' Could Be Covertly Watching Us From Space, Physicist Says
They're called 'lurkers', and they may have been covertly surveilling us from space for millions of years – since before we even existed, perhaps. That's the bold proposal being made in a new scientific paper by American physicist James Benford. But even though Benford's ideas sound radical, they draw upon a long history of conjecture in the SETI (Search for Extraterrestrial Intelligence) community. In 1960, Stanford radiophysicist Ronald Bracewell first suggested the idea that "superior galactic communities" could disperse autonomous interstellar probes as "hypothetical feelers" throughout space in order to observe, monitor, and maybe even communicate
-
In this image, Galaxy Hoag's Object is seen encircled by a perfect ring of hot, blue stars.
-
Hubble captured a small area of M17, also known as Omega or Swan Nebula. The image shows a vast expanse of glowing hydrogen accompanied by other gases.
-
The image of the open cluster of stars, known by the name NGC 3063, was captured by Advanced Camera for Surveys onboard Hubble. The image is spread across 19 light-years.
-
The undated image was released by NASA September, 2009. Taken by the refurbished Hubble Space Telescope, the image shows Gravitational Lensing in Galaxy Cluster Abell 370.
-
Planetary nebula NGC 2818, which lies to the south of constellation Pyxis, can be seen in striking details. The spectacular structure of the planetary nebula contains the outer layers of a star that were expelled into interstellar space. NGC 2818 is often heralded as one of the Galaxy’s few planetary nebulae to be discovered as a member of an open star cluster.
-
The spectacular image was captured by the Wide Field Planetary Camera 2 of the NASA’s Hubble Space Telescope. In the image, two spiral galaxies can be seen passing each other. The larger one has been designated as NGC 2207 (L) and the smaller one, situated on the right, has been catalogued as IC 2163.
-
This view of the Crab Nebula in visible light comes from the Hubble Space Telescope and spans 12 light-years.
-
The following image is a combination of observations made by the ALMA and NASA/ESA’s Hubble Space Telescope. In the image, Antennae Galaxies, located 70 million light-years away, can be seen in the Corvus Constellation (The Crow).
-
NASA’s Hubble Space Telescope captured images of Comet Ison after it was predicted that it would make its closest approach to Earth on December 26, 2012. However, the comet completely disintegrated before it could be visible to the naked eye as it passed close to the Sun.
-
This 2006 image provided by NASA shows thousands of stars forming in the cloud of gas and dust known as the Orion nebula, as viewed by the Hubble Space Telescope. More than 3,000 stars of various sizes appear in this image assembled from 100 different images sent back by the Hubble Space Telescope. The original Hubble pictures are black and white photos, which are then carefully colorized.
-
Hubble captured this young planetary nebula located 8,000 light-years away. The image of MyCn18 was captured via Wide Field and Planetary Camera 2 aboard NASA's Hubble Space Telescope.
-
The four moons of the planet Saturn can be seen passing in front of their parent planet.
-
This photograph of the coil-shaped Helix Nebula is one of the largest and most detailed celestial images ever made. The composite picture is a seamless blend of ultra-sharp images from NASA's Hubble Space Telescope combined with the wide view of the Mosaic Camera on the National Science Foundation's 0.9-meter telescope at Kitt Peak National Observatory near Tucson, Arizona.
-
Resembling a diamond-encrusted bracelet, a ring of brilliant blue star clusters wraps around the yellowish nucleus of what was once a normal spiral galaxy. The image, released on the 14th anniversary of the telescope, shows the galaxy, cataloged as AM 0644-741, which is also a member of the class of so-called "ring galaxies." It lies 300 million light-years away in the direction of the southern constellation Dorado.
-
Young star Pismis 24-1, located at the core of small open star cluster Pismis 24, can be seen in this image provided by NASA and ESA. The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends on the arm of the Sagittarius constellation.
-
In this image, hundreds of blue stars can be seen wreathed by warm glowing clouds. The image is the most detailed view of the largest stellar nursery in our local galactic neighborhood. The massive, young stellar grouping, called R136, is only a few million years old and resides in the 30 Doradus Nebula, a turbulent star-birth region in the Large Magellanic Cloud (LMC), and a satellite galaxy of our Milky Way.
-
The image of distorted galaxy Ugc 10214 was captured by The Advanced Camera For Surveys Aboard Nasa's Hubble Space Telescope. The galaxy is also known by the name of Tadpole and resides 420 million light-years away in the constellation Draco.
-
This portion of the Monkey Head Nebula was imaged in the infrared using Hubble's Wide Field Camera 3. The image demonstrates Hubble's powerful infrared vision and offers a tantalizing hint of what scientists can expect from the upcoming James Webb Space Telescope.
-
Swirls of gas and dust reside in this ethereal-looking region of star formation imaged by NASA's Hubble Space Telescope. This majestic view, located in the Large Magellanic Cloud (LMC), reveals a region where low-mass, infant stars and their much more massive stellar neighbors reside.
-
This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released to mark its 18th launch anniversary. In this image, NGC 6670, an overlapping edge-on galaxy can be observed. The galaxy is located 400 million light-years away from Earth.
-
Hubble Space Telescope image of Barred spiral galaxy NGC 1300 taken in September 2004. It is located around 69 million light-years from Earth in the constellation Eridanus.
-
The image shows episodes of star formation taking place across the face of nearby galaxy NGC 4214. The galaxy is currently forming clusters of new stars from its interstellar gas and dust. The picture was created from exposures taken in several color filters with Hubble's Wide Field Planetary Camera 2.
-
Surrounded by natal gas and dust, NGC 602 is featured in this stunning Hubble image of the region. At the estimated distance of the Small Magellanic Cloud, the picture spans about 200 light-years, but a tantalizing assortment of background galaxies are also visible in the sharp Hubble view. The background galaxies are hundreds of millions of light-years or more beyond NGC 602.
-
This is one of the eight galaxies observed by the astronomers to study universe’s expansion rate. The NGC 584, located 72 million light-years away in the Virgo constellation, consists of two main stars — la supernova and Cepheid variables.
-
A huge, billowing pair of gas and dust clouds in Hubble Space Telescope image of the supermassive star Eta Carinae.
-
The delicate filaments, sheets of debris from a stellar explosion in a neighboring galaxy, resemble the puffs of smoke and sparks from a summer fireworks display in this image from NASA's Hubble Space Telescope.
-
Galaxy Zwicky 18 has been compared with the famous painting of Dorian Gray from Oscar Wilde novel as it appears to look older the more astronomers study it.
-
To celebrate the Hubble Space Telescope's 16 years of success, the two space agencies involved in the project, NASA and the European Space Agency (ESA), released this image of the magnificent starburst galaxy, Messier 82 (M82). This image is the sharpest wide-angle view ever obtained of M82. The galaxy is remarkable for its bright blue disk, webs of shredded clouds, and fiery-looking plumes of glowing hydrogen blasting out of its central regions.
-
A majestic face-on spiral galaxy located deep within the Coma Cluster of galaxies, which lies 320 million light-years away in the northern constellation Coma Berenices. The galaxy, known as NGC 4911, contains rich lanes of dust and gas near its center.
-
In this photo, released by NASA and the European Space Agency to commemorate the Hubble Space Telescope’s completion of 100,000th orbit around the Earth in its 18th year of exploration and discovery, scientists aimed Hubble to take a snapshot of a dazzling region of celestial birth and renewal. In the image, a small portion of the nebula star cluster NGC 2074, located 170,000 light-years away, can be observed.
-
The Bug Nebula is one of the brightest and most extreme planetary nebulae known. At its center lies a superhot, dying star smothered in a blanket of hailstones. The new Hubble image reveals fresh detail in the wings of this cosmic butterfly.
-
Hubble Space Telescope’s Advanced Camera For Survey captured this image of 2 galaxies from the constellation Coma Berenices, also known as ‘The Mice’ (NGC 4674).
-
Discovered more than a century ago, the Horsehead Nebula has been captured in a different light by the Hubble Space Telescope. The nebula is a small part of a vast star-forming complex in the Orion constellation.
-
The V838 Monocerotis had its moment of fame in 2002 when it emerged from obscurity and suddenly became 600,000 times more luminous than the Sun. The star's rise to fame was short-lived and it soon faded into obscurity.
-
Also known as the "Little Ghost Nebula", owing to its appearance to a small ghostly cloud. The picture captures the dying moments of the star NGC 6369.
-
In celebration of the 21st anniversary of the Hubble Space Telescope's deployment into space, astronomers at the Space Telescope Science Institute in Baltimore, Md., pointed Hubble's eye to an especially photogenic group of interacting galaxies called Arp 273.
-
Saturn is seen here in ultraviolet light. Particles in Saturn's atmosphere reflect different wavelengths of light in discrete ways, causing some bands of gas in the atmosphere to stand out vividly in an image, while other areas will be very dark or dull.
-
The Calabash Nebula, also known as the Rotten Egg Nebula, pictured here is a spectacular example of the death of a low-mass star like the sun. The star is seen going through a rapid transformation from a red giant to a planetary nebula, blowing its outer layers of gas and dust out into the surrounding space. Astronomers rarely capture a star in this phase of its evolution because it occurs within the blink of an eye — in astronomical terms.
-
This colorful bubble is a planetary nebula called NGC 6818, also known as the Little Gem Nebula. It is located roughly 6,000 light-years away in the constellation of Sagittarius.
-
This image captures the cosmic pairing of the star Hen 2-427, commonly known as WR 124, and the nebula M1-67 which surrounds it. Both objects are found in the constellation of Sagittarius and lie 15,000 light-years away. The nebula is estimated to be no more than 10,000 years old — just a baby in astronomical terms.
-
This picture of young stars flaring to life was released by NASA to commemorate a quarter century of solar system exploration by Hubble Space Telescope. Scientists aimed Hubble’s near-infrared Wide Field Camera 3 through a dusty veil covering the stellar nursery to capture the nebula and the dense concentration of stars in the central cluster. The star cluster is about 2 million years old and contains some of our galaxy’s hottest, brightest and most massive stars.
-
This shot shows a maelstrom of glowing gas and dark dust within one of the Milky Way’s satellite galaxies, the Large Magellanic Cloud (LMC). At the heart of this cosmic cloud lies the butterfly-shaped Papillon Nebula, which is thought to be tightly linked to the early stages of massive star formation.
-
Dubbed a colorful holiday ornament in space, NGC 6326 is a planetary nebula with glowing wisps of outpouring gas that are lit up by a central star nearing the end of its life. This picture was taken using the Hubble Space Telescope’s Wide Field Planetary Camera 2.
-
This image shows the demise of a star like the sun. The star is ending its life by casting off its outer layers of gas, which formed a cocoon around the star's remaining core. Ultraviolet light from the dying star makes the material glow. The burned-out star, called a white dwarf, is the white dot in the center.
-
This image shows a spiral galaxy known as NGC 7331, located about 45 million light-years away. Facing us partially edge-on, the galaxy showcases its beautiful arms, which swirl like a whirlpool around its bright central region.
-
IC 342, one of the brightest in the sky, is nicknamed the “Hidden Galaxy” because of its obscure position next to the equator of the Milky Way’s galactic disk, which is thick with glowing cosmic gas, bright stars and dust. The galaxy, however, is active, as indicated by the range of colors seen in the image.
-
The spiral galaxy NGC 3521 has a soft, woolly appearance as it is a member of a class of galaxies known as flocculent spirals. Fluffy patches of stars and dust show up here and there throughout the disks in flocculent spirals. NGC 3521 is located almost 40 million light-years away in the constellation of Leo.
-
Lying about 500 million light-years away in the constellation of Sculptor, the cartwheel shape of this galaxy is the result of a violent galactic collision.
-
This image shows the center of the Lagoon Nebula in the constellation of Sagittarius. The region is filled with intense winds from hot stars, churning funnels of gas, and energetic star formation, all embedded within an intricate haze of gas and pitch-dark dust.
-
Large Magellanic Cloud is home to one of the largest and most intense regions of active star formation known to exist anywhere in our galactic neighborhood — the Tarantula Nebula. This image shows both the spindly, spidery filaments of gas that inspired the region’s name, and the intriguing structure of stacked “bubbles” that forms the Honeycomb Nebula (to the lower left).
-
Shown in this image is a small section of the expanding remains of a massive star, Veil Nebula, that exploded about 8,000 years ago. The debris is one of the best-known supernova remnants and derives its name from its delicate, draped filamentary structures. This close-up look unveils wisps of gas, which are all that remain of what was once a star 20 times more massive than the sun.
-
The two-lobed Red Spider Nebula harbors one of the hottest stars known and its winds generate waves that are 62.4 billion miles high. The atoms caught in the supersonic shocks caused by the waves emit the radiation seen in the picture.
-
An underlying population of infant stars embedded in the nebula NGC 346 are seen forming from gravitationally collapsing gas clouds.
-
Roughly 50 million light-years away lies a somewhat overlooked little galaxy named NGC 1559. Pictured here by Hubble’s Wide Field Camera 3, this barred spiral lies in the little-observed southern constellation of Reticulum (the Reticule).
-
This Hubble image shows the supernova remnant SNR 0509-68.7, also known as N103B. It is located 160,000 light-years from Earth in the neighboring galaxy of Large Magellanic Cloud. The actual supernova remnant is the irregular shaped dust cloud, at the upper center of the image. The gas in the lower half of the image and the dense concentration of stars in the lower left are the outskirts of the star cluster NGC 1850.
-
This image, released in celebration of Hubble Space Telescope's 28th anniversary in April 2018, records all that's happening at the heart of the Lagoon Nebula, a vast stellar nursery located 4,000 light-years away, visible in binoculars as merely a smudge of light with a bright core. At the center of this image is Herschel 36, a young star 200,000 times brighter than the sun.
-
This celestial lightsaber was spotted not in a galaxy far, far away, but rather inside our home galaxy, the Milky Way. It’s inside a turbulent birthing ground for new stars known as the Orion B molecular cloud complex, located 1,350 light-years away.
-
An expanding halo of light is seen around a distant star, named V838 Monocerotis (V838 Mon), located about 20,000 light-years away at the outer edge of Milky Way galaxy. The illumination of interstellar dust comes from the red star at the middle of the image.
-
Described by NASA as a glass-blown holiday ornament, this festive-looking planetary nebula is NGC 5189 at the final stage of its life.
-
Hubble's Wide Field and Planetary Camera 2 captures a very young star (between 300,000 and a million years of age) surrounded by material left over from the star's formation.
-
Ladder-like structures are seen within a dying star. Cataloged as HD 44179, this nebula is more commonly called the 'Red Rectangle' because of its unique shape and color as seen with ground-based telescopes.
-
Named Pillars of Creation, captured in this image is an active star-forming region within Eagle Nebula, located 7,000 light-years from earth. The blue colors in the image represent oxygen, red is sulfur, and green indicates presence of both nitrogen and hydrogen.
-
Captured here are the remains of a supernova explosion known as Cassiopeia A. The huge swirls of debris glow with the heat generated by the passage of a shockwave from the supernova blast.
Scientists have been studying the ways galaxies are born, grow, and die for a long while, but there are still so many things we don’t know about the process. Observations suggest that Messier 110 is a nearly-burnt-out galaxy packed with old stars, but can such galaxies be reborn into something new, or are they merely waiting to be swallowed up by even larger galaxies like Andromeda?
These are things we still don’t know, and because the events take billions of years to unfold, we may never truly understand how it all works. At least we can enjoy the view.
Alien 'Lurkers' Could Be Covertly Watching Us From Space, Physicist Says .
They're called 'lurkers', and they may have been covertly surveilling us from space for millions of years – since before we even existed, perhaps. That's the bold proposal being made in a new scientific paper by American physicist James Benford. But even though Benford's ideas sound radical, they draw upon a long history of conjecture in the SETI (Search for Extraterrestrial Intelligence) community. In 1960, Stanford radiophysicist Ronald Bracewell first suggested the idea that "superior galactic communities" could disperse autonomous interstellar probes as "hypothetical feelers" throughout space in order to observe, monitor, and maybe even communicate