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

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

Jupiter has a mass 2.5 times greater than the rest of the planets combined. In the infant years, it was 2.5 times its current ...

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

As the most massive planet in the Solar System, and first to form, Jupiter’s gravity shaped the formation of everything else.

South African President Cyril Ramaphosa said his visit to the White House on Wednesday was "a great success" even though a confrontation during the meeting with President Donald Trump over allegations ...

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

If you have a question you’d like an expert to ... This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being.

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

The fifth planet from the sun, Jupiter is what watercolor dreams are made of. Vibrant bands of clouds ripple around its thick atmosphere, making up a world so large that more than 1,300 Earths ...

A ghostly Martian moonrise, starlit skies, and a mission chasing life’s traces—Perseverance captures more than just images.

Stargazers can look forward to meteor showers and full moons. Planetary alignments and ... offering the closest and brightest view of the planet. September 22 Autumnal Equinox The official start ...