About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 b ushered in a new era of exoplanet research.

CART space observatory is ‘hanging by a thread’ with parts held up at Argentine customs, project managers say.

The interstellar comet 3I/ATLAS has a thick irradiated crust that no longer resembles its home star system, simulations and ...

Astronomers have captured a haunting image of a “cosmic bat” spreading its wings across deep space. This nebula, 10,000 light-years away, glows crimson as newborn stars ignite clouds of gas and dust.

Avi Loeb criticizes NASA for not releasing key images and for classifying 3I/ATLAS as a comet without conclusive evidence ...

I/ATLAS has divided the scientific community, with experts Avi Loeb and Brian Cox disagreeing on its underlying nature ...

Stargazers using telescopes should be able to see the object in the predawn sky beginning Nov. 11, according to EarthSky.

A trio of meteor showers sends flashes of light across our skies this month, and the first week will feature the largest and ...

NASA has paused operations of the Neutron Star Interior Composition Explorer (NICER) aboard the International Space Station ...

Is 3I/ATLAS a once-in-a-century interstellar comet or a genuine signal? We separate verified data from viral claims, quotes from NASA and Harvard.

November's Sky Above episode features a supermoon, meteor shower, and interstellar comet, with experts discussing these ...

On December 19, 2025, 3I/ATLAS will arrive closest to Earth at a separation of 269 million kilometers, when hundreds of ground-based telescopes as well as the Hubble and Webb space telescopes will ...