What a distant quasar and a âyoungâ black hole could reveal about the universe NASA scientists perform a tower extension test on the James Webb Space Telescope, which is set to launch in October. The telescope will orbit 1 million miles above Earth and allow astronomers to look even further into space than the Hubble Telescope, which was launched more than 30 years ago. (Source: NASA) By Danya Gainor | February 15, 2021 at 7:37 AM MST - Updated February 15 at 7:37 AM
PHOENIX â A team led by University of Arizona astronomers has discovered the most distant quasar found to date. Researchers hope the quasar, which is more than 13 billion light-years from Earth, will provide answers to how galaxies formed after the big bang.
| UPDATED: 15:02, Tue, Feb 9, 2021
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Supernovas come in various shapes and sizes but are widely regarded as the Universe s biggest fireworks. Astronomers originally classified these as either Type I or Type II supernovas although today we know there are many more types with their own quirks. One such classification is a Type Ia supernova, which involves a white dwarf - the hot core of a star that has shed its outer layers - being ripped apart by a runaway thermonuclear reaction caused by the star merging with or siphoning too much material from a nearby companion.
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In 2013, the Hubble Space Telescope found the birth certificate of oldest known star in the universe, cataloged as HD 140283, aptly named “methuselah”. The star, located in the constellation Libra, which is at the very first stages of expanding into a red giant, could be as old as 14.5 billion years (plus or minus 0.8 billion years), which at first glance would make it older than the universe’s calculated age of about 13.8 billion years, creating what we commonly call a dilemma.
The strange star, said NASA’s Hubble team, which has an anemic 1/250th as much of the heavy element content of our sun and other stars in our solar neighborhood.)has been known about for more than a century because of its fast motion across the sky. The high rate of motion is evidence that the star is simply a visitor to our stellar neighborhood. Its orbit carries it down through the plane of our galaxy from the ancient halo of stars that encircle the Milky Way, and will eventually slingshot back