Smaller gas giants are less likely to survive in such systems, surrounded by clashing planetary titans. With their lower masses, they're more likely to either get flung out of the system or pulled ...

A massive, fast-orbiting planet is inching closer to its star, and scientists now have direct evidence of its impending ...

The newfound exoplanet, called Kepler-139f, is a gigantic world roughly twice the mass of Neptune and 35 times the mass of ...

New images from the James Webb Space Telescope reveal the dazzling auroras of Jupiter, shining hundreds of times brighter than those on Earth. The breathtaking displays, captured on Christmas Day ...

August brings Saturn and Neptune together, offers two shadow transits of Titan, and sees a conjunction of Venus and Jupiter.

The punishing radiation appears to be causing the planet to shed its atmosphere at a rate of at least 1 trillion grams per ...

Habitable zones and planet formation When factoring in this super-Earth data, the team calculated that there should be around 0.35 super-Earth planets per star on wide Jupiter -like orbits.

Jupiter is our solar system's biggest planet by far. It used to be twice as large: Study A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow ...

Jupiter, the largest planet orbiting the sun, used to be much bigger and stronger when the solar system was just beginning to take shape, a pair of astronomers say. Two scientists at Caltech and ...