Sep 20, 2017
There are two leading ways to measure the universe's rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal.
Aug 11, 2017
The cosmic ray detector known as CREAM is headed for the International Space Station, with a goal of measuring the highest energy possible for direct measurement of high-energy cosmic rays.
Apr 17, 2017
Stringent testing is underway to prove the James Webb Space Telescope can handle an Earth-shaking take-off and still capture the universe’s first light while deeply ensconced in the hyper-cold of space.
Universe, Earth, Sun, Solar System
Apr 13, 2017
We once thought oceans made our planet unique, but we’re now coming to realize that ‘ocean worlds’ are all around us.
Oct 7, 2016
30 million years from now, a massive cloud of gas will collide with the Milky Way. Astronomers are studying the incoming cloud and learning more about its origin.
Aug 4, 2016
Researchers using NASA's Kepler space telescope have found evidence of strong magnetic fields in the cores of stars--a finding that could upset theories of stellar evolution.
Apr 6, 2016
Assembly of NASA's next great space observatory, the James Webb Space Telescope, is underway. It will show researchers the first stars and galaxies that formed in the early universe.
Mar 18, 2016
When the Space Age began, explorers were eager to visit the planets of the solar system. As the years have passed, however, astronomers have realized that the moons of the solar system may be even more interesting.
Dec 31, 2015
Researchers have used NASA space telescopes to prove that space-time is much less "foamy" than some models predict. Understanding their result requires a trip into the world of quantum physics.
Nov 23, 2015
Astronomers have long hoped to find another planet in the cosmos similar to Earth--a blue dot in the distance that could harbor life akin to our own. NASA's Kepler spacecraft may have found the next best thing.
Sep 30, 2015
Astronomers using NASA's Hubble Space Telescope have discovered an immense cloud of hydrogen evaporating from a Neptune-sized planet named GJ 436b. The planetâs atmosphere is evaporating because of extreme irradiation from its parent star.
May 26, 2015
As the Hubble Space Telescope celebrates its 25th anniversary, scientists are reflecting on the key role astronauts played in allowing the telescope to continue making great discoveries.
Universe, Sun, Solar System
May 5, 2015
May 5, 2015: As May of 2015 unfolds, Halley's Comet is more than 5 billion kilometers from Earth, receding into the inky blackness of the outer solar system, where its looping orbit takes it every 76 years. Dim and distant, history's most famous comet won't be back until sometime... Read More
Universe, Earth, Solar System
Apr 30, 2015
April 30, 2015: The planet closest to the Sun is, ironically, one of the coldest. That’s just one of many mind-bending discoveries about Mercury that NASA’s MESSENGER spacecraft beamed back to Earth over the past 7 years. Earlier today, the mission ended with a crash as spectacular as... Read More
Apr 7, 2015
Citizen scientists scanning images from a NASA observatory have found "yellow balls" in space that may hold important clues to the mysteries of starbirth.