If you're wondering what kind of telescope you need to see Saturn and Jupiter, you're halfway to the answer. Although either of the two main types of telescope — refractors and reflectors — can be ...

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, ...

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 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: NASA, ESA, CSA, STScI, Ricardo Hueso (UPV), Imke de Pater (UC Berkeley), Thierry Fouchet ...

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 ...

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 ...