A vast underground tunnel known as a lava tube, formed from ancient volcanic activity, was recently discovered lurking beneath Venus.

Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure ...

NASA’s SPHEREx telescope observed a dramatic outburst from interstellar comet 3I/ATLAS after its October 2025 solar flyby. Infrared data revealed water vapor, carbon dioxide, methanol, methane, and ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

The MAPS Comet is expected to reach perihelion in early April, passing only 99,600 miles (160,200 km) above the surface of the sun (photosphere). To survive such a close approach, the comet needs to ...

Where did Earth’s water come from? This has been a topic of debate among scientists for a very long time, and we might finally be close to an actual answer. In a new study published in Nature ...

The fate of a comet that was predicted to pass close to Earth remains a mystery five years after its dramatic breakup in the inner solar system.

An interstellar comet can seem to be silent when it is the hottest and so at the same instant it will suddenly unleash its ...

The interstellar object 3I/ATLAS has sparked intrigue in the scientific community after NASA's SPHEREx spacecraft detected ...

A newly discovered sungrazing comet C/2026 A1 is heading for a perilous close encounter with the Sun in April. If it survives, it could become bright enough to shine in daylight, offering a rare ...

A Harvard scientist has suggested that our Solar System may be far more crowded with interstellar objects than anyone ...