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.

Where did the moon's magnetism go? Scientists have puzzled over this question for decades, ever since orbiting spacecraft ...

While the moon once had a weak magnetic field generated by a small molten core, the team's research suggests it likely wouldn ...

NASA's Perseverance rover is exploring a new Mars region called Krokodillen, which is thought to harbor some of the oldest and most intriguing rocks on the Red Planet.

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

Saturn will burn in Aries from May 24th until September 1, 2025, when the planet will retrograde back into Pisces for a few months before returning to the cardinal fires of the ram from February 14, ...

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

Once thought to be a barren, rocky body, known as Ceres, it is now revealing itself as something far more interesting, in the ...

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 ...

Mars, engaged in a cosmic tug-of-war with its moon, is predicted to form rings again in the next 50 to 70 million years.

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

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