What if we’ve been thinking about dark matter all wrong, scientist wonders
Two exotic new theories suggest dark matter could be either made from tiny black holes or formed by Hawking radiation at the cosmic horizon.
NASA plans to build a nuclear reactor on the moon — a space lawyer explains why, and what the law has to say
Recently, acting NASA Administrator Sean Duffy reportedly suggested a U.S. reactor would be operational on the moon by 2030.
NASA’s new sun-studying mission ‘PUNCH’ attains its final form in Earth orbit
The four spacecraft of NASA's PUNCH mission have successfully locked in place in Earth orbit.
TRAPPIST-1d isn’t the Earth-like planet scientists had hoped it to be, according to JWST data
As another world around TRAPPIST-1 shows no signs of an atmosphere, astronomers urge us not to give up hope for an Earth-like atmosphere on one of the other worlds in the system.
Discovery of 250 ‘mini galaxies’ could help scientists pin down the nature of dark matter
Only a fraction of the size of the Milky Way, these galaxies have thus far been too faint for most telescopes to spot.
Blue Origin pitches new ‘Mars Telecommunications Orbiter’ for Red Planet missions (video)
Blue Origin has used its Blue Ring spacecraft platform to develop the Mars Telecommunications Orbiter, which the company says could aid future NASA missions to the Red Planet.
Hidden fault beneath Canada could trigger massive earthquake after 12,000 years of silence
Advanced satellite and lidar mapping has uncovered signs that the Tintina fault in Canada's Yukon may be primed for a powerful earthquake.
NASA’s Perseverance rover spies mysterious ‘helmet’ on Mars (photo)
The medieval-looking "helmet" is the latest addition to Mars' gallery of odd-shaped rocks.
Red supergiant star expels mysteriously large cloud of gas
The star, called DFK 52, is a member of a cluster of similar red supergiants, but it's losing mass at an extreme rate never seen before.
Satellites watch Tropical Storm Erin take shape over the Atlantic Ocean (video)
Forecasters warn Erin may intensify into the season's first major hurricane within days.