Space & Physics

Scientists detected gas at least five times hotter than previous theories had predicted inside a galaxy cluster from the early universe

Scientists observed an active region on the sun for a record 94 days, marking a “milestone in solar physics”

The “Seven Sisters” of the Pleiades are part of a much larger complex that can help reveal our galaxy’s deep history

Astronomers just measured the mass of a free-floating planet without a star for the first time

The new year has arrived, and the Quadrantid meteor shower is coming in hot. Here’s how to see this often-spectacular shower at its peak

A galaxy cluster discovered on New Year’s Eve in 2020 shines in a new image from NASA’s Chandra X-Ray Observatory

Astronomers combined data from NASA’s JWST and Chandra X-ray Observatory to create a stunning new image of two merging spiral galaxies

NASA’s new boss Jared Isaacman hinted that he could break with Texas lawmakers’ push to move iconic space shuttle Discovery from the Smithsonian to Houston

From crewed lunar voyages to flight tests of fully reusable rockets and launches of new orbital telescopes studying the outer limits of the cosmos, 2026 should be a banner year for space science and exploration

The proposed Russian Orbital Station will stick to a familiar path instead of an ambitious polar orbit

SpaceX is mulling an IPO in 2026. Here’s how that could affect its work with NASA and the push to put humans on Mars

Record-breaking objects can tell us about the most powerful events in the cosmos—sometimes