The International Astronomical Union’s Minor Planet Center, which catalogs new moons and other small bodies in the solar system, announced the discovery on May 21. At roughly 435 miles wide, 2017 ...

The Hubble Space Telescope time-lapse captured footage of Jupiter, Saturn, Uranus and Neptune. Credit: SCIENCE: NASA, ESA, Amy Simon (NASA-GSFC), Michael H. Wong (UC Berkeley) / VISUALIZATION: Joseph ...

Scientists suggest a star and its planet are orbiting a second star in two opposite directions in an exotic binary star ...

You don't need us to tell you that Jupiter, which has more than twice the mass of all the other planets in the Solar System ...

Jupiter may have once been more than twice its current size, with a magnetic field 50 times stronger, say scientists who ...

In its earliest days, Jupiter may have been even more colossal than it is now—twice as large, in fact, with a magnetic field ...

Jupiter, the largest planet orbiting the sun, used to be much bigger and stronger when the solar system was just beginning to ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

Astronomers have calculated that the gas giant Jupiter used to be twice as big as it is now, based on the odd orbits of two ...

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

Following the much-ballyhooed “planet parade” this winter, the planets have been gradually dipping below the horizon, ...

A Europa Lander prototype was just successfully field tested on Alaska's Matanuska Glacier to simulate the icy conditions of ...