In January 1610, Galileo Galilei, using a newly improved telescope with 20x magnification, observed four celestial bodies orbiting Jupiter, initially appearing as stars. These bodies, later named Io, ...

New observations from the James Webb Space Telescope (JWST) are painting a new picture of Jupiter's moon Europa and revealing the hidden chemistry of the icy moon's interior. For decades, scientists ...

WASHINGTON -- Scientists said they have found evidence of water in the atmosphere of Jupiter's icy moon "Europa." NASA said its Hubble space telescope observed the presence of persistent water vapor ...

The Hubble Space Telescope has been surveying space since 1990 and has captured some interesting cosmic elements in action.

In just its first week of beaming back images, the Webb Space Telescope has shown its versatility. On Tuesday, NASA unveiled a picture of a galaxy 13.1 billion light-years away. Now, it shows a planet ...

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Jupiter's four Galilean moons will line up in front of Jupiter in the early morning sky on Aug. 8. The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up ...