This image from NASA's Hubble Space Telescope showcases Messier 3 (M3), one of the Milky Way's most massive globular clusters ...

Roman is in Florida, getting ready for its August liftoff.

The Hubble Space Telescope's evidence of an "intermediate-sized" black hole about 6000 light-years away in the closest ...

NASA's proposed Habitable Worlds Observatory will be designed for robotic repairs instead of astronaut servicing. The ...

NASA prepares a robotic mission to rescue the aging Swift telescope before orbital decay brings the observatory back to Earth ...

The images shed light on the galaxy’s past and star clusters that other telescopes couldn’t in what the astronomers are ...

On July 8, 2011, Space Shuttle Atlantis lifted off from Launch Complex 39A at NASA's Kennedy Space Center on the STS-135 ...

Chinese scientists may have just found a way to save the world from a future Armageddon after calculating exactly how to ...

The Bullet Cluster of galaxies might only have half as much dark matter than scientists thought, or perhaps even none at all, ...

NASA's New Horizons probe has woken up in good health nearly 6 billion miles away beyond Pluto after spending nearly a year ...

Launching in the 2040s, the HWO telescope will search for Earth-like planets and feature swap-out instruments maintained by ...