Lurking at the heart of the Milky Way, Sagittarius A* (Sgr A*) is a supermassive black hole four million times the mass of ...

The Gaia mission has allowed researchers to understand the motions of stars like never before, even revealing possible interactions between our solar system and nearby stars. Planetary Science ...

At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.

Time has always seemed like the one thing physics could count on. Matter changes, stars die, particles flicker in and out, ...

A telescope built to protect Earth from asteroids accidentally discovered 3I/ATLAS, only the third interstellar object ever ...

The area surrounding our galaxy’s central supermassive black hole contains three strangely different populations of stars – ...

For SpaceX, acquiring AI coding start-up Cursor was another step on the road to becoming an end-to-end AI company.

A distant, icy body circling the Sun far beyond Neptune has handed astronomers a fresh puzzle. Designated 2023 KQ14 and ...

Earliest quasar variability ever detected shows a 630-million-solar-mass black hole at cosmic dawn already had an orderly ...

A newly discovered object orbiting far beyond Neptune has its closest approach to the Sun pointed in the opposite direction from every other known body like it, weakening one of the central ...

China included artificial intelligence in its global governance whitepaper published Wednesday, and said Beijing was speeding ...

For a long time, Earth’s ending seemed settled. In about five billion years, the sun will swell into a giant, the inner Solar ...