SUNSET: 
HaloSat: A Small Satellite for a Big Question
HaloSat, a mini-satellite recently deployed from the International Space Station, is on the hunt for the universe's missing matter.
Planet-Protection Policies: Due For Revision?
A new National Academies study assesses NASA's efforts to protect neighboring worlds from contamination and recommends ways the space agency could do a better job.
NASA's Dawn Probe Reaches Its Low, Final Orbit
NASA's Dawn spacecraft has entered a new and final orbit that will take it less than 30 miles above the surface of asteroid Ceres.
Methane and Other Organics on Mars
The Curiosity rover has detected organic molecules in ancient rocks on Mars.
Curiosity Rover is Drilling Again
An innovative technique has allowed NASA's Curiosity Rover to resume drilling Martian rocks. But the partially successful test shows that more work remains to be done.
Dunes on Pluto
Planetary scientists think they’ve found wind-built ripples of methane ice on the king of the Kuiper Belt.
Radio Experiment Launches With China's Moon Orbiter
A Dutch radio astronomy experiment hitched a ride today with China's relay satellite for the upcoming Chang'e 4 mission.
Antares Launch to Light Up Sunday Morning Sky
The Cygnus OA-9 mission launching from Wallops Island early Sunday morning could put on quite a show along the East Coast.
Helicopter to Hitch a Ride with Mars 2020 Rover
A small helicopter will be the first mission to fly through the skies of Mars.
The X-ray Legacy of RXTE
The RXTE satellite, which reentered Earth's atmosphere over the tropics on April 30th, leaves behind a legacy of discoveries and data.
Mars-bound CubeSats Launch With NASA's InSight
The Mars Cube One mission — the first to send CubeSats into interplanetary space — will test revolutionary relay technologies as it accompanies Mars Insight to the Red Planet.
NASA's InSight Lander Heads to Mars
Rising through thick fog from Vandenberg Air Force Base in California. NASA's latest mission intends to probe deeply into Mars and decipher how it formed.
Gaia Maps 1.7 Billion Stars, Widens Cosmic Census
With its second data release, the European Space Agency's Gaia satellite has redefined the way we look at our galaxy.
Happy 28th Birthday, Hubble!
To celebrate Hubble's 28th birthday NASA is releasing a brand-new image of the Lagoon Nebula, a vast stellar nursery.
Successful Launch for NASA’s TESS Exoplanet Mission
The Transiting Exoplanet Survey Satellite (TESS) launched successfully on April 18th at 6:51 p.m. EDT aboard a SpaceX Falcon 9 rocket to survey the entire sky for new worlds.
Tiangong 1's Remote Reentry
China's first space station reentered Earth's atmosphere over the South Pacific after almost seven years in space.
James Webb Telescope Delayed Until 2020
NASA officials announced Wednesday that the James Webb Space Telescope launch would be delayed until approximately May 2020. But before the mission can launch, its managers may have to face Congress.
Last Chance to See Doomed Chinese Space Station
China's premier space station, Tiangong 1, has a one-way ticket into the Earth's atmosphere later this month. See it before it's no more.
Amazing Storms, Jet Streams on Jupiter
NASA’s Juno spacecraft has found breathtaking cyclones at Jupiter’s poles and probed how deep the planet’s jet streams go.
James Webb Space Telescope: Additional Delays "Likely"
A non-partisan government office has issued a report warning of additional delays for the James Webb Space Telescope, which could pit the mission against its funding cap.
