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

Potential impactors are most likely to have low velocities and the highest likelihood of hitting Earth during the winter.

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

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 ...

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

Planet hunters have grown used to strange worlds, but a handful of discoveries now point to something even more radical: ...

These images help to unravel the magnetic mechanisms driving the sun's behavior and shaping the space environment throughout ...

Our Sun, that steady burning ball of gas that has faithfully illuminated Earth for billions of years, is slowly but ...

During the weekend, the orbits of Earth and Saturn will combine to create an interplanetary optical illusion for anyone with ...

At the farthest reach of the Sun’s influence, NASA’s Voyager 1 spacecraft has stumbled into a region that behaves less like ...

Uncover the secrets of Comet 3I/ATLAS, the rare interstellar visitor of 2025. Learn its alien origins, ancient chemistry, and ...

Spectroscopy of other stars has led to most discoveries of exocomet systems. In research led by University of Colorado ...