The object’s aphelion—the farthest point on the orbit from the sun—is more than 1,600 times that of Earth’s orbit,” Institute ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

A passing star has been discovered that could cause chaos in the Solar System, sending Earth flying out of orbit.

New research suggests that our entire solar system is vulnerable to being thrown into chaos by a distant star.

Astronomers have just discovered a new celestial body in our solar system that could challenge major space theory. 2017 OF201 ...

But this assumes that nothing affects the Solar System in the meantime, and that is not a certainty. As we travel around the ...

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly ...

Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System - a ...

Mar. 17, 2025 — A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new ... Webb Telescope Captures Its ...

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

Tianwen, which means "questions to heaven," is the name given to China's program of robotic Solar System exploration. Tianwen ...

China’s Tianwen-2 mission has launched to explore an asteroid that may be a piece of the moon, as well as an active asteroid ...