The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...

Jeffries held the House floor for more than eight hours Thursday, taking his “sweet time” with a marathon floor speech that ...

Dubbed 3I/ATLAS, the comet poses no danger to Earth and will remain roughly 150 million miles away as it speeds by.

NASA's newest astrophysics space telescope launched in March on a mission to create an all-sky map of the universe. Now ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

Mars, a planet once capable of sustaining liquid water and harboring flowing rivers, today stands as a frozen desert. For ...

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

A recent study has uncovered a dramatic interaction between a planet and its parent star that is reshaping our understanding ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

Earlier research had found that the rings of Saturn respond to vibrations within the planet. Saturn's interior vibrates at frequencies that cause slight variations in its gravitational field, and the ...

A mysterious cosmic traveler has found its way to the Solar System from the uncharted reaches of interstellar space. The rare ...

An object from another star has been seen entering the solar system at high speed, and is expected to whip around the sun in ...