Beginning Nov. 25, 2025, Mercury will be far enough west to peek above the horizon just before sunrise. Venus will also be naked-eye-visible as a bright point of light but you’ll want a telescope or a ...

"If we find technological satellites of Jupiter that we did not send, it would imply that Jupiter is of interest to an ...

Astronomers measure the speed at which the solar system is hurtling through space by mapping surrounding galaxies and ...

A Harvard scientist has suggested that the trajectory of the mysterious space lump 3I/ATLAS will bring it close enough to ...

This means that it would still take a little over four whole years of traveling at lightspeed to reach the red dwarf—not that ...

NASA has released images of interstellar comet 3I/ATLAS captured by Mars missions, revealing rare details about its composition and origins.

Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with ...

The interstellar comet 3I/ATLAS challenges physics with a missing dust tail, a forward anti-tail, and strange composition.

Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.

New telescope observations reveal structural features never documented in any known celestial object The morphology defies conventional understanding. The forward anti-tail persists where physics says ...

It takes light a single day to travel 16 billion miles. The Voyager 1 probe will need a little longer, just 49 years.

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...