The Voyager spacecraft has made a groundbreaking discovery at the edge of our solar system—an astonishing 50,000-degree wall ...

The boundary of a solar system is not defined by planets, but by gravity. Beyond Pluto and the Kuiper Belt lies the Oort Cloud, extending up to a light year from the Sun and still considered part of ...

The comet, discovered in July 2025, originated far beyond our Solar System and is thought to be around 7 billion years old - ...

New polarimetry data on interstellar comet 3I/ATLAS reveals bizarre refractory dust, proving this alien visitor formed in a ...

The unusual behaviour of interstellar comet 3I/ATLAS has reignited online debate, but astronomers say the gaps in public ...

NASA has taken a major step toward one of its most ambitious science goals as it searches for signs of life on planets beyond ...

NASA’s Pandora mission will study exoplanet atmospheres by separating star light from planet signals, helping scientists learn which distant worlds may have air, water, and signs of life ...

A mysterious visitor from beyond our solar system is making a rare appearance: Comet 3i/ATLAS is an interstellar comet, traveling at breakneck speed and carrying clues from a distant star system ...

CAPE CANAVERAL, Fla. (AP) - Astronomers may have found the first moon outside our solar system, a gas behemoth the size of Neptune. Plenty of planets exist beyond our solar system, but a moon around ...

Our Sun’s outer atmosphere, the corona, is millions of degrees hotter than it should be, and no one knows why.