Hurricane Irma Closes Arecibo Observatory
The threat from the Category 5 storm has shuttered the world’s second-largest radio telescope until further notice
Stories by Mike Wall
Tropical Storm Harvey Shutters NASA's Johnson Space Center through Labor Day
Essential operations to support the International Space Station will continue, with the center reopening on September 5
Deadline for Google Lunar X Prize Extended to March 2018
The remaining teams in this private space race have more time—and the opportunity for more money—on their way to the Moon
New Group Works to Preserve Apollo Lunar Landing Sites
For All Moonkind is working with space agencies to develop formal protections for space archaeology sites
Space-Based 3-D Printing Reaches Milestone
Successful test suggests “Archinaut” system could soon assemble huge structures in orbit
NASA’s Pluto Probe May See Double During Next Flyby
When New Horizons flies by Kuiper belt object MU69 in 2019, it may find two space rocks rather than one
Stellar Winds Could Be Bad News for Life on TRAPPIST-1 Planets
Two new studies suggest the system’s potentially habitable planets could have lost their atmospheres long ago
No Evidence for Past Martian Civilization, Scientists Tell Congress
Congressman Dana Rohrabacher asks about ancient aliens during a routine hearing
Astronomers Detect Strange Signals from Red Dwarf Star
The radio bursts are tantalizing, but probably not transmissions from talkative aliens
White House Selects Leadership for National Space Council
Scott Pace, the director of the Space Policy Institute at George Washington University, will be the Council’s executive secretary
Toxic Compounds May Sterilize Martian Soil
Microbes could be killed off by perchlorates exposed to ultraviolet radiation on the planet’s surface
SpaceX Launches Rocket with "Highest-Ever Reentry Force"
The company has now landed a recycled rocket for the second time
Elon Musk Publishes Plans for Colonizing Mars
The billionaire entrepreneur and founder of SpaceX wants to make humanity a "multi-planetary species”
What's Next for NASA’s New Astronaut Class?
A dozen new candidates were chosen from more than 18,000 applicants. Now the real work begins
Celestial Harmonies Pin Down Orbit of Exoplanet TRAPPIST-1 h
Orbital resonances reveal the Earth-size world circles its star every 19 days
NASA Calls for Europa Mission Instrument Ideas
Researchers should begin planning instruments to go on a potential life-hunting lander mission to Jupiter's ocean-harboring moon Europa, the space agency said
“Snow White” the Dwarf Planet Has Its Own Moon
Astronomers have found a moon orbiting the third-largest dwarf planet in our solar system
Astronomers Find Water and Weird Clouds on Extrasolar "Warm Neptune"
Two space telescopes reveal the distant exoplanet HAT-P-26b has an atmosphere rich with hydrogen, helium and water vapor
Scientists Push to Orbit Pluto
After New Horizons’ 2015 encounter with the dwarf planet, researchers are hoping to go back—to stay
Earth-Mass "Ice Ball" Planet Found 13,000 Light-Years Away
The chilly, distant world is the smallest yet found via the “microlensing” planet-hunting technique
