The solar system's largest moon, Ganymede, which orbits the largest planet, Jupiter, was hit by an asteroid four billion years ago that shifted the gas giant's satellite on its axis, new research ...

This enhanced image of the Jovian moon Ganymede was obtained by the JunoCam imager aboard NASA's Juno spacecraft during the mission's June 7, 2021, flyby of the icy moon on Juno's 34th pass close to ...

A massive collision billions of years ago may have dramatically reoriented Ganymede, Jupiter’s largest moon. Naoyuki Hirata at Kobe University, Japan, and his colleagues studied Ganymede’s extensive ...

Add Yahoo as a preferred source to see more of our stories on Google. On Dec. 28, 2000, NASA’s Galileo spacecraft discovered auroras on Ganymede, Jupiter’s largest moon. Galileo launched in 1989 on a ...

Astronomers might not know what dark matter is made of, and they might not be able to see it, but they know that it exists.

The asteroid collision that killed the dinosaurs 65 million years ago may have been a major cosmic crack-up, but it was nothing compared to a bigger impact that occurred roughly four billion years ...

Looking for a sky event this week? Check out our full Sky This Week column. January 12: Io's post-opposition transit Point your telescope at bright Jupiter in Gemini to catch a transit of the large ...

NASA’s Juno spacecraft flew closer to Jupiter’s moon Ganymede than any spacecraft in the last two decades, according to NASA. The moon is the largest in our solar system. (FILE-A screenshot from the ...

There’s no mistaking Jupiter in the sky these Pottsville winter evenings, rising in the southeast as evening twilight ends.

Looking for a sky event this week? Check out our full Sky This Week column. January 20: Comet Schaumasse slides by some ...