The universe is full of spectacular sights, from aurora on Earth and Jupiter to the solar flares that cause them, to distant ...

Today’s observatories document every pulse and flash in the sky each night. To understand how the cosmos has changed over longer periods, scientists rely on a more tactile technology.

Stargazers can see six planets all in one evening during the second month of the year, especially Mercury, which is usually ...

Earlier telescopes, including Hubble, revealed the Helix as a serene, eye-shaped glow. Webb presents a more intimate view, ...

KENNEDY SPACE CENTER — SpaceX’s Falcon 9 rocket pierced the Wednesday morning sky as it launched three spacecraft from NASA and NOAA that will study the solar system’s “bubble,” collect information on ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a sigh of relief. It's not.

Scientists have found new evidence suggesting that interstellar 3I/ATLAS is not an alien spaceship, as one conspiracy theory claims, but a comet.

Hubble Space Telescope images of 3I/ATLAS taken in December 2025 show the object releasing two narrow jets of material while moving away from the Sun. The observations were made on December 12 and ...

Astronomers have detected a fast moving interstellar object named 3I Atlas entering our solar system, only the third confirmed visitor from another star system. First spotted by the ATLAS survey and ...

The object, estimated to be the size of a city block, is only the third known interstellar visitor to our solar system since scientists began keeping track of such things. The Hubble telescope ...