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Sep 12, 2015 07:27 AM ET // Elizabeth Howell,
A so-called cosmic tsunami is rousing a galaxy cluster affectionately nicknamed Sausage, suggesting that stagnant galaxies can be rejuvenated when galactic clusters collide.
Aug 31, 2015 02:50 PM ET // Elizabeth Howell
See just how well Hubble is doing after 25 years in orbit.
Aug 26, 2015 06:30 AM ET // Elizabeth Howell
September is a perfect time to help astronomers educate the public (and themselves) about the universe.
Aug 12, 2015 07:00 AM ET // Elizabeth Howell
Mercury and Pluto features were among the places the public helped name in the past year -- where else can we (officially) leave our cosmic mark?
Aug 10, 2015 04:00 PM ET // Irene Klotz
A study of more than 200,000 galaxies shows that the universe is producing half as much energy as it did 2 billion years ago and continues to fade.
Jul 4, 2015 12:39 PM ET // Sarah Lewin,
A new cosmic portrait taken at an observatory in Chile reveals a cluster of blue and white stars.
May 14, 2015 07:00 AM ET // Charles Q. Choi,
Astronomers may have solved the decades-long cosmic murder mystery of what kills most galaxies in the universe: They are strangled to death, so they can no longer create new stars.
May 6, 2015 09:10 AM ET // Calla Cofield,
A galaxy far, far away — farther, in fact, than any other known galaxy — has been measured by astronomers.
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