Astrophysical Journal

Galaxy cluster discovered at record-breaking distance

A new record for the most distant galaxy cluster has been set using NASA's Chandra X-ray Observatory and other telescopes. This galaxy cluster may have been caught right after birth, a brief, but important stage of evolution ...

date17 hours ago in Astronomy
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The rise and fall of galaxy formation

An international team of astronomers, including Carnegie's Eric Persson, has charted the rise and fall of galaxies over 90 percent of cosmic history. Their work, which includes some of the most sensitive astronomical measurements ...

dateAug 30, 2016 in Astronomy
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Milky way had a blowout bash six million years ago

The center of the Milky Way galaxy is currently a quiet place where a supermassive black hole slumbers, only occasionally slurping small sips of hydrogen gas. But it wasn't always this way. A new study shows that 6 million ...

dateAug 29, 2016 in Astronomy
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Dark matter—hot or not?

For almost a century, astronomers and cosmologists have postulated that space is filled with an invisible mass known as "dark matter". Accounting for 27% of the mass and energy in the observable universe, the existence of ...

date15 hours ago in Astronomy
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An atypical protostar

At the centre of this image, captured by ESA's Herschel space observatory, is a truly peculiar cosmic object: a star named IRAS 19312+1950.

dateAug 30, 2016 in Astronomy
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