Voyager 1 has been exploring the cosmos for decades, but when it reached the edge of the solar system, it found something ...

The enigma of the intruder about the same size as Manhattan Island is making astronomers rethink what they know about cosmic ...

Our Solar System hides worlds of fire and ice, storms that outlast civilizations, and mysteries still beyond human reach.

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial ...

Created by the sun, the protective bubble of the heliosphere shields our solar system from harmful radiation. A new mission ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

An interstellar visitor is barreling closer to our sun, giving scientists a rare opportunity to observe an object from outside our celestial backyard. The comet 3I/ATLAS is just the third known object ...

Over 80% of exoplanetary systems with three or more planets exhibit a "peas-in-a-pod" architecture, characterized by similarly sized planets closely spaced and orbiting near their star. A new study ...

Astronomers just caught a rare glimpse of an interstellar comet as it zoomed past Mars. Images of the object, dubbed 3I/ATLAS, were captured by two of the the European Space Agency's Mars orbiters -- ...

A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. New evidence found in shavings from a meteorite known as Northwest Africa 12264 — a 50-gram (1.8 ...

Viral rumours claim a massive object is headed for Earth. Space agencies confirm it is a harmless interstellar comet, not ...

Most comets, including the well-known Halley's, loop through our solar system like cosmic time capsules that formed alongside our Sun and planets around 4.5 billion years ago. But every now and then, ...