•   
  •   

Tech & Science Astronomers spot one of the oldest stars ever

03:07  06 november  2018
03:07  06 november  2018 Source:   bgr.com

Astronomers Have Stumbled Upon One Of The Most Ancient Stars In The Universe

Astronomers Have Stumbled Upon One Of The Most Ancient Stars In The Universe A tiny star located about 1,590 light-years from Earth could be as old as 13.53 billion years, making it one of the most ancient stars ever discovered. The diminutive “ultra metal-poor” star is called 2MASS J18082002–5104378 B — hereafter abbreviated to J1808-5104 — and it was discovered by a team of astronomers led by Kevin C. Schlaufman from Johns Hopkins University. At an estimated 13.53 billion years old, it’s among the first generation of stars to have appeared after the Big Bang, which happened 13.7 billion years ago.

The most distant star explosions in the universe have now been discovered, suggesting scientists may one day see the deaths of the first stars to arise In the past 12 years, astronomers have detected a new class of supernova, so-called super-luminous supernovas, which are up to 100 times brighter

Is this the oldest star in the Milky Way? J0815+4729 is a star with both an extreme iron deficiency and a carbon surplus, which suggests it’s one of the oldest stars ever found in the Milky Way. In a new study published in The Astrophysical Journal Letters, a team of Spanish astronomers

Astronomers spot one of the oldest stars ever© Provided by BGR Our Solar System is incredibly old by human standards. The Sun, sitting in the center, is thought to be just over 4.6 billion years old, which is an almost unfathomable amount of time to you and I. But it’s actually not all that impressive when it comes to stars.

A new survey of one particular star here in our own Milky Way galaxy reveals that it’s a whole lot older than anyone thought. In fact, it’s old enough to make our own star look like a youngster by comparison. The elderly star is called (deep breath) 2MASS J18082002–5104378 B, and what it lacks in a flashy name it more than makes up for in age. Astronomers now believe it to be an incredible 13.5 billion years old.

Are These the World's Oldest Living People? Pair of 118 Year Olds in Bolivia Might Hold Record

Are These the World's Oldest Living People? Pair of 118 Year Olds in Bolivia Might Hold Record They were both born in 1900.

Spotting objects in space has gotten easier and easier thanks to technological advances, but sometimes mother nature gives astronomers a bit of help as well. Scientists using the trust Hubble Space Telescope have announced the discovery of the most distant star ever observed

Business News›News›Science› Astronomers spot one of the ' oldest galaxies'. "So our best guess is that the first stars and galaxies and black holes all formed within the first half a billion to one billion years. This new object is very close to being one of the first galaxies ever to form," Yun said.

2MASS J18… you know what? Let’s just call it “the Old Star,” for now. The Old Star gave away its age thanks to its incredibly low mass and metal content. Researchers believe that newer stars tend to be very high in metallicity, but the Old Star’s metal content is incredibly low. It’s also very small, weighing in at only around 1/10th of the mass of our own Sun.

“We’ve never discovered a star so low mass and made of so few grams of metals,” astrophysicist Andrew Casey, co-author of the study published in The Astrophysical Journal, told ScienceAlert. “This discovery tells us that the very first stars in the Universe didn’t have to all be massive stars that died long ago. These ancient stars could form from very small amounts of material, which means some of those relics from soon after the Big Bang could still exist today.”

One of the Milky Way’s satellite galaxies started leaking into another

One of the Milky Way’s satellite galaxies started leaking into another As chaotic as life is here on Earth, it's not often that we have time to look up at the night sky and ponder the infinite frontier, much less keep track of what's going on out there. 

Thanks to the Hubble Telescope and some lucky stars , astronomers actually have been able to see the most distant star ever seen by man or “For the first time ever ,” said co-author Alex Filippenko of the University of California at Berkeley That’s older even than Joe Biden. It also means, in effect

As stars were created they formed small galaxies. An international team of researchers are now saying that they’ve discovered about 80 galaxies that may The Suprime-Cam is an 80-megapixel optical camera attached to the prime focus of the Subaru Telescope at the Mauna Kea Observatory, Hawaii.

So, how has the star managed to stay alive for so long? Well, its small size actually plays in its favor, as very large stars tend to burn through their fuel much faster than the particularly tiny ones. The Old Star only just breaks the known mass limit to facilitate the burning of hydrogen, so it’s very slowly using up its fuel over billions of years.

Its small size and dim shine made it hard to spot, and the team suggests that there might be plenty of other ultra-old stars sitting around the Milky Way that have remained undetected because we simply can’t see them all that well.

The Pasta in Our Stars.

For all astrophysicists have learned about these bizarre objects since they were first predicted in the 1930s, they still don’t know exactly what neutron stars look like on the inside. For now, the study of their interiors relies on theoretical models, and astrophysicists employ a very specific framework that helps make the unfathomable realities of neutron stars delightfully relatable: They compare them to pasta.

—   Share news in the SOC. Networks

Topical videos:

This is interesting!