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.
Solar System, Sky Watching
Aug 23, 2016
Venus and Jupiter are converging for a spectacular conjunction in the sunset sky on August 27th.
Sun, Earth’s Space Environment
Aug 16, 2016
Summer is the season for electric-blue noctilucent clouds. NASA's AIM spacecraft is finding that these clouds continue to reveal details about how the atmosphere works.
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.
Solar System, Mars, Planets of Our Solar System
Aug 1, 2016
NASA is sniffing out the sweet smell of methane on Earth, Mars and beyond. It's a greenhouse gas and, in some places, possibly a sign of life.
Jul 28, 2016
As hurricane season unfolds, a helpful set of eyes mounted on the International Space Station allows scientists to observe massive storms from a special angle.
Earth, Climate Change
Jul 26, 2016
Earth's oceans could be concealing a mystery about climate change. Researchers have recently found evidence of hidden heat hundreds of meters below the ocean's surface.
Jun 30, 2016
NASA's Planetary Defense Coordination Office is working to keep Earth safe from asteroids and other hazards that come from deep space.
Earth, Climate Change
Jun 27, 2016
A global effort to monitor air quality is in the works as the US, Korea, and the European Union prepare to launch geostationary satellites capable of monitoring pollutants and other aerosols.
Earth, Sun, Earth’s Space Environment
Jun 14, 2016
Dynamic bubbles of ionization in Earth's upper atmosphere can cause GPS signals to "twinkle" like stars, affecting the quality of navigation on Earth below. NASA recently conducted a mission called CINDI to investigate this phenomenon.
May 27, 2016
For the first time, researchers have identified a genetic marker associated with a spaceflight medical issue. It is in the enzymes associated with the "1 carbon pathway."
Solar System, Mars, Planets of Our Solar System, Sky Watching
May 20, 2016
Mars and Saturn are getting together in the constellation Scorpius for back-to-back oppositions in May and June 2016.
Sun, Sky Watching
May 3, 2016
On May 9th, Mercury will move across the face of the sun, offering a rare viewing opportunity for professional astronomers and backyard sky watchers alike.
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.