A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

NASA is providing more images and information about the interstellar object that's passing through our solar system right now ...

The nucleus, estimated from Hubble Space Telescope images to be at most a few kilometers across, cannot be resolved in our HiRISE image. Additionally, due to spacecraft jitter during the observation ...

While none of the spacecraft have cameras perfectly designed to spot comets zipping by at speeds up to about 153,000 miles per hour (246,000 kilometers per hour), astronomers didn’t want to miss what ...

NASA has a photo dump of the interstellar comet 3I/ATLAS. It made news in July when it was confirmed to have originated ...

NASA is providing more images and information about the interstellar object that's passing through our solar system right now, known as 3I/ATLAS.

On Wednesday, Nov. 19, NASA will unveil more 3I/ATLAS images captured by the space agency's fleet of instruments both on the ...

NASA has scheduled a photo-dump of 3I/ATLAS images captured by the agency's fleet of ground and space instruments. You can watch it live.

NASA will reveal new imagery of the interstellar comet 3I/ATLAS on Wednesday (Nov. 19), and you can watch it live. The ...

NASA prepares to host a live event where they will share the images captured by various telescopes and observatories.

The unique initiative comes from the Virtual Telescope Project that captured a fascinating image of 3I/ATLAS' ion tail.

Comet 3I/ATLAS recently emerged from behind the glare of the sun to become visible to ground-based telescopes.