In a way, that’s exactly what she studies. A heliophysicist at NASA’s Goddard Space Flight Center, MacDonald, working remotely in Walla Walla, has spent her career chasing the mysteries behind the ...

Dark matter doesn’t emit, absorb, or reflect light. It’s invisible but supposedly makes up 85% of the universe’s mass. Because it’s so abundant, astronomers believe it should explain many unsolved ...

While not an official term, "city-killing asteroids" refers to asteroids large enough to significantly damage cities if they were to crash into Earth, the scientists said. Asteroids are rocky, airless ...

A high-resolution multispectral image of Washington, DC from Vantor. Visible are the Washington Monument (left), Tidal Basin (the body ...

Casimir cavities are mysterious spaces between microscopic metal plates in a vacuum. Areas of diminished energy between the plates cause them to push toward each other, as if trying to fill the ...

The Moon, long treated as a geologically inert relic, is still contracting and cracking. A growing body of peer-reviewed research now confirms that tectonic faulting on the lunar surface has occurred ...

NASA and Vast are teaming up so that the aerospace company can send four private astronauts to the ISS in 2027 following a ...

Scientists are proposing to build a laser in a crater on the moon to help future lunar missions land safely in the dark and find their way around. This ultra-stable light source could also help us ...

NASA's top planetary defense expert reveals the biggest threat isn't Hollywood-style doomsday rocks, but undiscovered 'city-killer' asteroids. While large and small threats are known, an estimated 25, ...

NASA’s first crewed moon mission in decades is delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue that’s plagued the agency since the Shuttle ...

NASA planetary defense experts warn that up to 15,000 undetected asteroids could devastate a major city on Earth.

Imagine you're all alone, driving along in a rocky, unforgiving desert with no roads, no map, no GPS, and no more than one phone call a day for someone to inform you exactly where you are. That's what ...