As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

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 ...

NASA is looking for new providers to supply low-gravity parabolic flights for spaceflight training and scientific research.

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

Earth's core contains nine to 45 times more hydrogen than the planet's oceans do, according to a new study that could settle a debate about when and how hydrogen was delivered to Earth.

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

Is 3I/ATLAS just a comet — or an intergalactic ark? A NASA spacecraft has discovered organic chemicals on 3I/ATLAS, which ...

The group became convinced that their human bodies were nothing more than temporary “vehicles” and that suicide was the only way of leaving their life on Earth behind.

Harvard scientist Avi Loeb suggests comet 3I/ATLAS may be an alien vessel seeding life, after NASA's SPHEREx spacecraft detected unexplained methane and organic chemicals on board.

A newly spotted comet is racing toward a perilously close encounter with the Sun, promising either a spectacular daytime ...

In A Nutshell Ancient frozen chemistry: New analysis of pristine samples from asteroid Bennu suggests its amino acids formed ...