Jupiter is already the biggest planet by far in our solar system, but new research suggests it was somehow once even larger than it is now. Twice as large, in fact. To put that into context, those ...

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Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Jupiter’s moon Io is the ...

New data from NASA's Juno orbiter, launched in 2011 in Florida, reveals Jupiter is slightly smaller than astronomers previously believed.

Jupiter’s innermost Galilean moon, Io, crosses the gas giant along with its shadow this evening in an event visible across the U.S. Jupiter rises around 6:30 P.M. local time, climbing above the ...

The Italian scientist Galileo Galilei, when hearing about the invention of the telescope in 1608, decided to make his own instrument. However, in January of 1610, when he applied it ...