Often more than 100 million times dimmer than objects visible to the unaided eye, TNOs are so small that even with NASA’s ...

Astronomers studying the James Webb Space Telescope’s enigmatic “Little Red Dots” have shifted their attention from the ...

Credit: NASA Large Binocular Telescope data cut helium measurement uncertainty threefold. Helium, a light chemical element, carries clues to what the universe was like during its first five minutes.

Skywatchers are in for a remarkable celestial display as Venus reaches its peak brilliance on8. This event, set to occur after sunset, promises to ...

NASA’s newest space telescope has taken its first look at the stars. The view is blurry for now, but that is exactly what ...

Because planets are born in the haze of material that surrounds young stars, it’s extremely difficult to study an exoplanet’s newborn stage. The fact that astronomers found Elias 2-24 b at all is ...

If some aspects of cosmic topology turn out to be true, the idea that starships might voyage across the cosmos for hundreds ...

The sun seems unchanging—a constant source of light and warmth for Earth and the most fundamental necessity for life as we ...

Astronomers had already classified some celestial objects that emitted low-energy X-rays as “supersoft.” The new objects emit just the lowest-energy slice of supersoft X-rays, so the researchers call ...

The young, bright open cluster NGC 7243 rides high in the sky late tonight, located in the zig-zagging constellation Lacerta.

At 55 AU from its star — farther than Neptune sits from ours — Elias 2-24 b is a Jupiter-size world confirmed at under a ...

See all the winning images of the Astronomy Photographer of the Year competition in 2026 – world's biggest astro imaging ...