Masses of Chileans jam capital in protest against government
Hundreds of thousands of protesters marched peacefully in Chile's capital Friday, intensifying pressure on a government struggling to contain deadly unrest over economic hardship. The huge throng surged toward a central plaza as participants blew whistles, banged pots and pans and carried Chilean flags and posters demanding change. The diverse crowd included students, workers, parents and their children.
© Provided by CBS Interactive Inc. Have astronomers found a new class of tiny black hole? Jackson Ryan/CNET
Have astronomers found a new class of tiny black hole ? Jackson Ryan/CNET. Now an entirely new detection method, pioneered by researchers at Ohio State University, suggests there may be a whole population of black holes we've been missing.
Black holes are an important part of how astrophysicists make sense of the universe—so important that scientists have been trying to build a census of In a study published today in the journal Science, astronomers offer a new way to search for black holes , and show that it is possible there is a class
Black holes are the cosmic champions of hide-and-seek. Einstein predicted they existed in 1916, but it took over 100 years before a telescope as wide as the world snapped the first picture of a black hole. They're elusive beasts, avoiding detection because they swallow up light. Even so, astronomers can see the tell-tale signs of black holes in the universe by studying different forms of radiation, like X-rays. So far, that's worked -- and a huge number of black holes have been discovered by looking for these signs.
Argentina’s center-left Peronists celebrate return to power
Argentina’s Peronists celebrated their return to power after incumbent President Mauricio Macri conceded defeat in a dramatic election that likely swung the country back to the center-left, saw the return of a divisive former president and threatened to rattle financial markets. As investors nervously eyed Monday’s market opening, thousands of jubilant supporters of Alberto Fernández and his vice presidential running mate, ex-president Cristina Fernández, waved sky-blue and white Argentine flags and chanted “We’re coming back! We’re coming back!”“Today, Alberto is the president of all Argentines,” Cristina Fernández told supporters, so
The mini black hole : Scientists discover a whole new class of black holes smaller than any known before in the universe. Black holes are often found in so-called binary systems, where two stars once orbited around each other, until one ran out of fuel and exploded.
The discovery shows there may be an entire class of black holes astronomers did not know existed. In a study published today in the journal Science, astronomers offer a new way to search for black holes , and show that it is possible there is a class of black holes smaller than the smallest
This computer simulation shows two black holes circling each other and was created after the first direct observation of gravitational waves.
However, an entirely new detection method, pioneered by researchers at The Ohio State University, suggests there may be a whole population of black holes we've been missing.
The findings, published in the journal Science on Nov. 1, detail the discovery of a black hole orbiting the giant star 2MASS J05215658+4359220 (J05215658, for short) using data from Earth-based telescopes and Gaia satellite observations. The team shows J05215658 is being orbited by a massive unseen companion -- and they suspect it might be an entirely new class of black holes.
"We're showing this hint that there is another population out there that we have yet to really probe in the search for black holes," said Todd Thompson, astronomer at The Ohio State University and lead author on the study, in a statement.
Tiny, mysterious asteroid is likely the solar system's smallest dwarf planet
(10) Hygiea is classified as an asteroid but maybe not for much longer.The study, published in the journal Nature on Oct. 28, observed (10) Hygiea with the SPHERE (Spectro-Polarimetric High-contrast Exoplanet REsearch) instrument attached to the European Southern Observatory's Very Large Telescope (VLT) in 2017 and 2018. Combining the observations with advanced numerical computations and modelling, the team was able to see the shape of Hygiea better than ever before.
Supermassive black holes may be the result of hundreds or thousands of tiny black holes that merge Instead, astronomers must rely on detecting the radiation black holes emit as dust and gas are Rapidly expanding space may have squeezed some regions into tiny , dense black holes less
A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it.
Generally, a binary system like this -- where a black hole orbits a star -- is easy to detect, because the black hole's enormous gravity pulls material from the star in, lighting up the black hole with radiation. Astronomers can detect that from Earth. But if the black hole is too small, it might not be interacting with the star in this way and remains invisible. That's the case with J05215658.
Related Slideshow: 32 landmark events in Earth sciences (Provided by Photo Services)
Inclusive of branches such as geology, oceanography, meteorology and astronomy, Earth sciences deal with the study of our planet’s interiors as well as the atmosphere, hydrosphere and biosphere. We look at some of the greatest discoveries that shaped this science.
First up: Milestones in geology (study of origin, history and structure of Earth)
1928: Norman L. Bowen publishes 'The Evolution of the Igneous Rocks'
The Canadian geologist published his most influential book, which eventually made way for geochemical and geophysical study of rocks and minerals. It is still considered the most important handbook on petrology (branch of geology that studies rocks and how they are formed).
The powerful statement behind Meghan's two new rings
The Duchess of Sussex has long used her jewels to convey hidden messages while also supporting brands that conform to her beliefs and make a statement. Now, Meghan has worn two golden rings that help to save endangered wildlife.
Astronomers first noticed an enigmatic object, dubbed “Sagittarius A*”, at the very heart of our Milky Way galaxy in the 1960s – the earliest days of radio But that means that the remaining half at least must be binary systems involving black holes – a class that have much rarer outbursts (usually many
Astronomers watching for these stellar explosions may have just seen the moment of a neutron star's birth—or maybe even a black hole 's—a thousand times The resulting cosmic explosion was so unusual, it left astronomers scratching their heads when its glow at last reached our planet last June.
1935: Richter scale is invented
Before this, earthquakes were measured on the Mercalli scale using Roman numerals, but it was considered inaccurate. American seismologist Charles Francis Richter (pictured) published his scale, which calculated the strength of earthquakes based on their magnitude, which was expressed in decimal figures, starting from 0.0. The readings were registered and printed on paper through a device called seismograph, which was designed by Richter and his colleague Beno Gutenberg.
1940s-50s: Continental drift is proven through gravity
Dutch geophysicist Felix Andries Vening Meinesz conducted several submarine expeditions around the world to measure the gravity field of the planet at different points. He discovered several negative gravity anomalies, mostly along oceanic trenches. He later attributed the same to continental drift, a phenomenon responsible for the movement of plates and continents over millions of years. Through this, Meinesz proved that the Earth’s crust is moving.
New class of black holes may exist, scientists say
An entirely new class of black holes that scientists were unaware of may exist, according to a study. The study published on Thursday in Science revealed a new way for astronomers to search for black holes and that there could be an entire group of black holes smaller than the smallest black holes in the universe. "We're showing this hint that there is another population out there that we have yet to really probe in the search for black holes," said Todd Thompson, a professor of astronomy at Ohio State University and lead author of the study, in a statement.
(Pictured) Thematic world map of continental drift.
1953: Mid-Atlantic Ridge is mapped
Studying the data recorded by an observatory ship over the Atlantic Ocean, American geologist Bruce C. Heezen and oceanic cartographer Marie Tharp first mapped the Mid-Atlantic Ridge. This also helped prove the theory of continental drift and how it is caused by plate tectonic movement on the seafloor.
1979: Moment magnitude scale is developed
Seismologists Thomas C. Hanks and Hiroo Kanamori developed the moment magnitude scale (MMS), which succeeded the Richter scale in measuring a quake’s strength. Since 2002, the United States Geological Survey (USGS) calculates and reports magnitudes of all modern earthquakes using MMS as it is perceived as far more accurate and helps determine the temblor’s size.
2001: Latest publication of Nickel-Strunz
The most recent edition of Nickel-Strunz classification was published in 2001. It is used to categorize minerals based on their chemical composition and is considered a major reference source for geologists and researchers.
Up next: Milestones in oceanography (study of physical and biological aspects of oceans)
Anthony Mackie and wife quietly divorced last year: Report
Anthony Mackie and wife quietly divorced last year: ReportThe split, according to TMZ, was amicable and lacked drama. In fact, the breakup went so under-the-radar that the Marvel actor actually filed for divorce from Sheletta Chapital in late 2017, and the divorce was finalized last year, all of which is just now being reported.
1930-34: Pioneering Bathysphere explorations
Naturalist William Beebe (L) was looking to attempt deep-sea explorations but lacked a proper device. That’s when he met Harvard engineer Otis Barton (R), who designed the Bathysphere – a spherical deep-sea submersible. Beebe and Barton became the first researchers to deep-sea dive a half a mile (3,028 feet) off Nonsuch Island in Bermuda in August of 1934, setting a world record which stood till 1949.
1943: Aqua Lung is patented
French engineer Émile Gagnan and French Naval Officer Jacques-Yves Cousteau registered their patent of the Aqua Lung – the first open-circuit, self-contained underwater breathing apparatus (SCUBA), which revolutionized underwater diving.
(Pictured) Cousteau demonstrates the Aqua Lung, with the help of Ethel Janney of Cold Spring Harbor, and Commander Douglas Fane, Chief of the U.S. Navy underwater demolition squad, in 1950. The demonstration took place in the swimming pool of the SS Liberte oceanliner.
1961: Deep Tow System is developed
San Diego, California-based Scripps Institution of Oceanography began developing the Deep Tow System, which is a near-bottom sonar system. Equipped with echo sounders and side-scanning sonars, the system is capable of producing finely detailed images of the seafloor and its sub-bottom structures.
1962: Robert Sténuit becomes first aquanaut
On Sept. 6, Sténuit (R) spent 24 hours and 15 minutes inside a steel cylinder known as Man-in-Sea I at the depth of 200.1 feet (61 meters), becoming the world’s first aquanaut. Two years later, he and Jon Lindbergh (L) spent 49 hours at a depth of 413.4 feet (126 meters) aboard Man-in-Sea II.
Voyager 2′s journey beyond the solar system reveals new cosmic secrets
The Voyager 2 spacecraft spent more than four decades surfing the solar wind away from the sun and out into the galaxy. Then, in less than a day, the probe burst from our sun’s protective bubble out into an interstellar sea of alien particles. The exact shape of that bubble—which repels about 70 percent of harmful cosmic radiation—and how the inside mixes (or doesn’t mix) with the outside, are questions that have troubled researchers for decades.
1970: First all-female team of aquanauts
As a part of the U.S. Department of the Interior project Tektite II, American marine biologist Sylvia Earle (pictured) led a team of female explorers in what was named as Mission 6. The aquanauts spent nearly 12 hours in a day in the water for nearly 14-30 days.
1995: Seafloor maps are created
As GEOSAT radar data from a U.S. Navy Earth Observation satellite were declassified by the government, the National Oceanic and Atmospheric Administration unveiled the first map of ocean floors depicting the fissures, volcanoes and mountains previously unseen.
2012: Deepsea Challenger reaches deepest-known point on Earth
Piloted by “Titanic” director James Cameron (pictured), the submersible reached the bottom of Challenger Deep, the Earth’s deepest-known point, on March 26. Located at the bottom of Mariana Trench, the point lies at a depth of 35,787 feet (10,908 meters) and took Cameron 157 minutes to reach from the sea surface.
Up next: Milestones in meteorology (study of Earth’s atmosphere, with focus on weather forecasting)
1922: Mathematician introduces weather forecast technique
British mathematician Lewis Fry Richardson (standing) published “Weather Prediction by Numerical Process,” which proposed a scheme of weather forecasting by solving differential equations. The method is still in use.
1929: First radiosonde is launched
The name radiosonde was coined by Frenchman Robert Bureau, who flew the first instrument on Jan. 7. However, it was Russian Pavel Molcahnov's design – made independently and first used on Jan. 30, 1930 – that became popular. Its simple design and ability to convert sensor readings into Morse code made it easy to use.
Rip Taylor's Cause of Death Revealed, Memorial Service Scheduled for Later This Month
The comedian died at the age of 84 last month.A rep for Taylor tells ET that he died of congestive heart failure at the age of 84 last month.
(Pictured) A radiosonde is launched via a balloon in May 1971.
1938: Global warming is connected to carbon dioxide
British steam engineer and inventor Guy Stewart Callendar compiled several temperature measurements from the 19th century and correlated them with old measurements of atmospheric carbon dioxide concentrations. He drew the conclusion that over the past 50 years, the global land temperatures have increased and that this can be a resultant effect of increase in carbon dioxide; however, he assumed it to be good for the planet as, according to him, the phenomenon prohibited the return of the “deadly glaciers.”
1948: First correct tornado prediction
American meteorologist Air Force Captain Robert C. Miller and Major Ernest J. Fawbush were the first people to correctly forecast a tornado. The duo used an empirical method to predict the twin tornado attack on Tinker Air Force Base in Oklahoma City, Oklahoma, U.S. in March that year. The prediction ensured no casualties and billions of dollars saved in damages.
(Pictured) The funnel of a tornado makes its way northwestward to the records crossing section of Dallas, Texas, on April 2, 1957.
1960: First successful weather satellite launch
While Vanguard 2 was the first weather satellite launched a year earlier, it failed to record notable data due to technical failures. On April 1, 1960, NASA-operated TIROS-1 (illustrated) was launched from Cape Canaveral, Florida, U.S. In a mission that lasted 78 days, it relayed multitudes of photographs of large-scale cloud formations and proved the importance of satellite surveillance of weather.
1971: Saffir-Simpson hurricane scale is developed
Civil engineer Herbert Saffir and meteorologist Robert Simpson developed the Saffir-Simpson scale that categorized hurricanes based on their intensity. From Categories One (lowest, 64-82 knots) to Five (highest, over 137 knots), the scale is used to classify tropical storms to this day and also helps provide a tentative prediction of potential damage and flooding caused.
2006: Weather radar improved
The weather radar’s interface is constantly researched and developed with more detailed information. In 2006, the radars were improved by adding factors such as ‘freezing rain,’ ‘rain and snow mixed’ and ‘snow’ to better predict the weather.
Up next: Milestones in astronomy (study of celestial objects and space phenomena)
1926: First liquid fuel-powered rocket
American engineer Robert H. Goddard (pictured) launched the first liquid-fueled rocket on March 16 in Auburn, Massachusetts, U.S. Running on gasoline and liquid oxygen, the rocket rose to a height of 41 feet (12.5 meters) and traveled 184 feet (56 meters) in 2.5 seconds, proving that liquid propellants were possible.
1930: Discovery of Pluto
While working for the Lowell Observatory in Flagstaff, Arizona, U.S., astronomer Clyde Tombaugh discovered the presence of a then-unknown celestial body in February, which would later be named Pluto. In 2006, it was re-classified as a dwarf planet as it didn’t qualify as a planet or a natural satellite.
1957: Sputnik 1 launch and the Space Race
Launched by the Soviet Union, Sputnik 1 became the first artificial Earth satellite. On Oct. 4, it was launched into an elliptical low orbit around the planet from Baikonur, Kazakhstan. The event triggered the Space Race between USSR and U.S., and led to the Americans launching their first satellite, Explorer 1, within four months.
1961: First man in space
Continuing to have an upper hand in the Space Race, USSR sent cosmonaut Yuri Gagarin into space aboard the Vostok 1 vessel. Gagarin completed an orbit of Earth on April 12. Only a month later, NASA sent astronaut Alan Shepard into space, aboard the Freedom 7 spacecraft.
1969: First man on the moon
After years of commendable achievements in space exploration by the U.S. and USSR, NASA became the first agency to put astronauts on our natural satellite. As the Apollo 11 craft touched down on the lunar surface on July 20, Neil Armstrong became the first man to walk on moon.
1972: First strong evidence of black hole
American Tom Bolton was one of the first astronomers who presented evidence of the existence of a stellar-mass black hole. He observed star HDE 226868 and noted that it appeared to be orbiting around something which was invisible but emitted powerful X-rays. The following year, the object was recognized as black hole Cygnus X-1 (illustration pictured).
1998: Construction begins on International Space Station
The first component of International Space Station Zarya was launched into orbit in 1998 on an autonomous Russian rocket. A few weeks later, NASA sent another component into orbit, which was attached to the previous module, and since then new components have been added on a regular basis. Today, the International Space Station is a huge habitable artificial satellite, with modules being added to this day.
2005: The 10th planet
American astronomer Michael E. Brown and his team discovered a massive body in the outer solar system in July from images taken in 2003. Appearing larger than Pluto, it was considered to be the 10th planet and was temporarily called 2003 UB313. Recent discoveries classified the object as a dwarf planet and it was titled Eris.
2015: US becomes first nation to explore all major planets
As NASA’s New Horizons craft did a successful flyby of Pluto, the U.S. became the first nation to explore all nine major planets of our solar system, as recognized in 1891.
2017: Cassini-Huygens ends after 20 years of exploration
NASA’s Cassini-Huygens mission ended its two decades of space exploration, which included 13 years of orbiting Saturn, crashing purposefully on the surface of the ringed planet on Sept. 15. It was the first vessel to enter Saturn’s orbit and also accomplished a landing on Saturn’s moon, Titan.
2019: NASA explores furthest point in space
NASA spacecraft New Horizons traveled to Ultima Thule, a trans-Neptunian object located four billion miles (6.5 billion kilometers) from Earth. The journey, which was made in six hours and eight minutes, marks the furthest point in space humanity has explored to date. Photographs sent back from the flyby – the space craft was 2,200 miles (3,500 kilometers) away – show two sphere-like objects fused together. The largest is believed to be 21 miles (33 kilometers) long.
2019: First photo of a black hole
On April 10, the world witnessed the first-ever photo of a black hole. It was captured by an international collaboration of scientists using Event Horizon Telescope, a planet-scale array of eight ground-based radio telescopes around the world. The black hole, observed at the center of the Messier 87 galaxy, is said to be 6.5 billion times more massive than the Sun.
The team suggest the new black hole is likely 3.3 times more massive than the sun, which would make it the lowest mass black hole yet discovered. However, there's potential the black hole could be up to six times as massive as the sun because there's a little bit of wiggle room built into the calculations. That would bring it in line with previous black hole discoveries.
Another possibility is the mysterious object might be a very large neutron star. When stars die, they have two options for the cosmic afterlife based on their mass: Big stars collapse into a black hole and little stars become a dead, neutron star. Neutron stars are small and incredibly dense and are believed to reach around 2.5 times as massive as the sun before collapsing into a black hole themselves.
To solve the mystery, astronomers will need to discover similar-sized objects lurking in the cosmos and identify what exactly they are. As astronomers get better at cosmic hide-and-seek, finding more black holes of differing sizes, the mysteries of black hole formation and evolution will begin to be unraveled.
What is a black hole? The universe's dark, mysterious monsters
Black holes are elusive and powerful regions of space. They have inspired sci-fi writers, scientists and space fans to peer into the deepest mysteries of the universe. Nothing, not even light, can escape from a black hole's strong gravitational field. We have wondered and speculated what they might look like, and we now have a better idea than ever before.Most of our pictures of what black holes look like come from artist concepts, like this one released by NASA in 2015. This image is communicating the idea of black holes blasting out radiation and high-speed winds. This artwork is based on an image of the Pinwheel Galaxy snapped by the Hubble Space Telescope.
The Large Millimeter Telescope Alfonso Serrano in Mexico was one of eight that collaborated to deliver the first ever black hole image as part of the Event Horizon Telescope project. The collaboration essentially created an array as wide as the Earth.The group also looked at Sagittarius A*, the black hole at the center of the Milky Way galaxy, but hasn't produced an image of it.
This is it. The real deal. Scientists and artists have created many visualizations of black holes, but on April 10, 2019, the Event Horizon Telescope project unveiled the first direct visual evidence of a supermassive black hole and its shadow.The black hole resides at the center of Messier 87, a massive galaxy in the nearby Virgo galaxy cluster.
The first black hole image wowed the internet and sparked both jokes and tributes. Google celebrated by unveiling an animation of the black hole in action, sucking down the Google letters.
How many telescopes does it take to get to the center of the Milky Way? NASA used its Chandra X-ray Observatory to capture this image of the middle of our galaxy. There's a supermassive black hole called Sagittarius A* lurking there.
Scientists long suspected a black hole is hiding out in the middle of our very own Milky Way galaxy. In late 2018, they finally confirmed it. A group of European scientists observed flares of radiation coming from Sagittarius A*.This illustration shows what the supermassive black hole might look like.
Cygnus X-1 is a stellar-mass black hole located in the Milky Way that was likely created from the collapse of a massive star. This illustration depicts the black hole pulling material from its companion star."This material forms a disk (shown in red and orange) that rotates around the black hole before falling into it or being redirected away from the black hole in the form of powerful jets," NASA said in 2011.
The European Southern Observatory put together this visualization of Sagittarius A* using "data from simulations of orbital motions of gas swirling around at about 30% of the speed of light on a circular orbit around the black hole."
Astronomers used NASA space telescopes to learn more about how black holes flare. The telescopes detected a supermassive black hole erupting with X-ray light. This NASA artist's illustration depicts an eye-catching view of a black hole."The results suggest that supermassive black holes send out beams of X-rays when their surrounding coronas -- sources of extremely energetic particles -- shoot, or launch, away from the black holes," NASA reported in 2015.
This teacup-shaped formation appears in a galaxy where NASA said a "storm is raging." The stormy source is a supermassive black hole."As matter in the central regions of the galaxy is pulled toward the black hole, it is energized by the strong gravity and magnetic fields near the black hole," said NASA. "The infalling material produces more radiation than all the stars in the host galaxy."
The Milky Way's own supermassive black hole Sagittarius A* has a ring of gases around it. The ALMA observatory was able to image the cool, nebulous gases and shared the view in June 2019.The red areas show hydrogen gas moving away relative to Earth, while the blue portion represents gas moving toward us. The crosshair is the black hole's location."This information will provide new insights into the ways that black holes devour matter and the complex interplay between a black hole and its galactic neighborhood," the National Radio Astronomy Observatory said.
The V404 Cygni black hole is an oddball. Scientists revealed in early 2019 this black hole is spitting out bright jet beams of matter into space at different angles. The jets seem to be rotating, giving the black hole a wobble like a spinning top. This artist's impression shows the V404 Cygni system and the accretion disk around the black hole.
The European Space Agency's Hubble Space Telescope site shared this doozy of an illustration in late 2016, saying, "The artist's impression depicts a Sun-like star close to a rapidly spinning supermassive black hole, with a mass of about 100 million times the mass of the Sun, in the center of a distant galaxy." The gravitational pull of the black hole is shredding the star.
This colorful image shows how a supercomputer looked at a black hole through a simulation. Researchers unveiled the results of the simulation in June 2019. It was aimed at investigating a theory that says the inner-most region of a spinning black hole would eventually align with the hole's equatorial plane.In this image, the accretion disk (red) aligns along the equatorial plane of the black hole (white center circle). The researchers called this the most-detailed simulation of a black hole to date.
Data from NASA's Chandra X-ray Observatory and other telescopes sent astronomers on a 2017 hunt for a supermassive black hole that may be moving. NASA described it as a "renegade black hole" that may have been formed by two smaller black holes colliding and merging.This illustration hints at what this black hole might look like.
Black holes are usually found at the center of galaxies, so what happens to the monster space beasts when two galaxies collide? They merge.Recent evidence suggests that this process results in the formation of a "cold quasar" which blows out all the gas and dust in the galaxy, but remains ringed by an area of star-forming debris. The black hole is responsible for "quenching" the galaxies star-forming abilities, so cold quasars are actually regions in space on the brink of death.
Rip Taylor's Cause of Death Revealed, Memorial Service Scheduled for Later This Month .
The comedian died at the age of 84 last month.A rep for Taylor tells ET that he died of congestive heart failure at the age of 84 last month.