According to their work, Jupiter's radius was once two to two-and-a-half times its current radius—large enough to contain ...

Scientific American spoke with the astronomer who has contributed to the discovery of two thirds of Saturn’s known moons ...

The team's calculations indicate that young Jupiter had a radius nearly twice its current size, with a volume large enough to ...

The study by Konstantin Batygin of Caltech and Fred Adams of the University of Michigan pulls off a rare feat in planetary ...

A new study has revealed that Jupiter—our solar system’s largest planet—was once even more enormous than it is today. In fact ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Jupiter wasn’t always the planet we know today—it was once twice as big, had a magnetic field 50 times stronger, and its ...

Though little is known about Deimos, another European spacecraft recently captured unprecedented views of the moon's far side ...

Meteor showers, eclipses and full moons will appear in our skies this summer. Mark your calendars with these dates, stargazers.

The mission has a Narrow Field Imager (NFI) and three Wide Field Imagers (WFIs). The NFI snaps pictures of the corona around ...

A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars. Captured using the rover's Mastcam instrument on January 17, 2025, the ...

Here’s how it works. If your stargazing journey has led you to an obsession with the planets, then look no further. Our guide features the best telescopes for seeing planets, tested by expert ...