Space & Physics

Humans have been in space onboard the ISS continuously for 25 years. As the station nears its end, new commercial habitats are lining up to take its place

Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is hiding it from Earth

Huge eruptions from the Milky Way’s supermassive black hole in the distant past may have sterilized much of the inner galaxy

“The only countries that will really learn more if [U.S. nuclear] testing resumes are Russia and, to a much greater extent, China,” says Jeffrey Lewis, an expert on the geopolitics of nuclear weaponry

Russian leader Vladimir Putin claimed his nation conducted a successful flight of a nuclear-powered cruise missile. Here’s how that missile might work

These rare samples, uncovered on the moon by China’s Chang’e 6 mission, might help to reveal secrets of how the solar system evolved

New peer-reviewed research reporting strange lights in the pre-space-age sky is sparking curiosity and controversy

Theorists have found that a “warm” version of cosmic inflation is consistent with known physics, linking it to the hunt for dark matter

A comet’s brightness depends on how it’s made, how and when we see it, and even a bit of unpredictable luck

Former NASA officials warn that the U.S. looks poised to lose its self-declared race to beat China to the moon

“Quantum echoes” rippling through Google’s quantum computer chip Willow could lead to advances in molecular chemistry and the physics of black holes

The planet’s brightness is dimming—changing rainfall, circulation and temperature