Stories by SPACE.com

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

Astronomers have found a moon orbiting the third-largest dwarf planet in our solar system

The crowdsourced effort intends to build replicas of the famed "galactic greeting cards," which are traveling out of the solar system on the Pioneer 10 and 11 space probes

Two space telescopes reveal the distant exoplanet HAT-P-26b has an atmosphere rich with hydrogen, helium and water vapor

Scientists are grappling with the problem of biological cross-contamination between Earth and other worlds

After New Horizons’ 2015 encounter with the dwarf planet, researchers are hoping to go back—to stay

With its testing at Goddard Space Flight Center completed, NASA’s James Webb Space Telescope embarks for further testing in Texas before its 2018 launch

An independent review panel will scrutinize the space agency’s in-progress Wide-Field Infrared Survey Telescope to ensure the project is on track

The chilly, distant world is the smallest yet found via the “microlensing” planet-hunting technique

First images from an epic dive through Saturn’s rings reveal a giant hurricane and turbulent storm clouds

The quadcopter-style lander could explore some of the moon’s most promising sites for habitability and life

The maneuver marks the final phase of Cassini’s mission, and promises the closest-ever investigation of Saturn

Citizen scientists and space-agency satellites come together to discover a new variety of aurora

The research grants provide funding for new studies of spacecraft propulsion, synthetic biology and more

Approach of the 2,000-foot space rock is closest for such a large object since 2004  

The orbital outpost is presently slated to be retired as early as 2024

A new climate model suggests six of the nearby star's seven worlds are uninhabitable

The brief flash of light from a far-distant galaxy is unlike any seen before

A crowdsourced science project to find the hypothetical new world has turned up four curious candidates

Elon Musk says reusing expensive orbit-class boosters will mean “a huge revolution in spaceflight”

Public-private partnerships may boost available nuclear fuel for space exploration

A new study finds organisms only took 30,000 years to repopulate a region devastated by the impact

The billion-solar-mass object is the largest runaway black hole ever seen

The president's proposed budget would boost funding for NASA's planetary science division, but at what cost?