An interstellar trespasser known as 3I/ATLAS is almost certainly a comet. So, why do so many people think it's ...

Although astronomers have now discovered more than 5,000 exoplanets, or planets outside of the solar system, the large majority of these planets are considerably larger than Earth. That’s partly ...

Scientists using the Hubble Space Telescope have measured the size of a small exoplanet just 22 light years away, confirming that it’s the closest known Earth-sized world to our solar system to date.

NASA has Hubble and Webb data, but calibration, Sun-side geometry, and Mars camera limits slow public release.

It’s not often that telescopes suspended in space have landmark birthdays like this one. Launched on April 24, 1990, NASA’s Hubble Space Telescope has orbited at about 320 miles above Earth’s surface, ...

A century ago, a star in Andromeda named V1 launched a revolution in astronomy, revealing its true immensity and the origin ...

March 22 (UPI) --NASA said Friday the Hubble Space Telescope has spotted a spider galaxy, an irregular galaxy, about 30 million light-years from Earth. NASA said the relatively faint galaxy, which had ...

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A spherical shape made from the pinpricks of light from closely packed stars revealed itself to the Hubble Space Telescope when the observatory recently peered into the constellation Mensa. Hubble ...