Infamous cult leaders and their deadly influenceMass suicides linked to doomsday beliefsThe warning behind “Don’t drink the ...

Four Australian women and nine children linked to Islamic State have booked flights from Syria to Australia, some expected to face charges on arrival.

Think you know the full and complete story about George Washington, Steve Jobs, or Joan of Arc? Think again.

Two months ago, Perplexity brought its Comet AI browser from the Mac to the iPhone and iPad for the first time. Now ...

Interstellar comet 3I/ATLAS was almost called 3I/Rubin, after researchers found that the giant survey telescope ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...

A rare comet from another star system is revealing just how different alien solar systems may be from our own.

Comet C/2025 R3 (PanSTARRS) continues to brighten ahead of its closest approach to Earth on April 26, and you can watch it fly between the sun and Earth through the eyes of an orbiting spacecraft this ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.

Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of "heavy" water. That hints it grew up in a frigid planetary system, possibly before its home star f ...