Nearly a half-century after humans voyaged to the moon, NASA and private U.S. companies are once again setting their sights beyond low Earth orbit
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
After more than a decade of controversy, the debate over the icy world’s demotion to “dwarf planet” status shows no sign of stopping
A new air traffic control system could ensure that you spend less time flying the crowded skies
Long-sought features may help researchers improve models of solar activity and predict space weather
Methods borrowed from biology are revealing previously hidden details about our galaxy’s history of star formation
Astronomer Caleb Scharf weighs what ever more exoplanets mean in the search for extraterrestrial life.
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?
The ALMA radio observatory has seen young spiral galaxies in unprecedented detail from 12 billion light-years away
Images from the Rosetta spacecraft provide the first clear link between a comet's outbursts and changes upon the comet's surface
The Swift telescope has charted a star's plunge into a supermassive black hole at the core of a distant galaxy
Researchers measured the intensity of the universe's ultraviolet background radiation, and say it may be strong enough to strip small galaxies of star-forming gas. Christopher Intagliata reports.
Eyeing a potential lander in the 2030s, scientists are studying the icy moon's treacherous surface
Hidden, impermanent balances in nature have shaped the history of physics, and could determine our universe’s future
Researchers used ancient climate cycles to confirm the solar system’s chaotic planetary orbits. An Earth–Mars collision is one distant outcome. Julia Rosen reports.
New funding will help the HERA observatory to peer deeper into the cosmic past than ever before
Two U.S. detectors will soon be joined by an instrument in Italy that could help solve the mystery of where gravitational waves originate
Bubbles of nitrogen gas may explain strange shape-shifting “magic islands” in the hydrocarbon seas of Saturn's largest moon