One of the brightest comets in 20 years, Comet 2024 G3 (ATLAS) returns for a close encounter with the sun — but will we be able to see it?

On Sept. 14, 2015 astronomers “heard” two black holes crashing into each other at close to the speed of light. This discovery was a watershed moment in physics and astrophysics, ...

The NASA mission broke its own record as it seeks to teach us more about our Sun, as well as reveal other secrets of the ...

A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union classified Pluto as a ...

Jupiter is huge when it comes to planets in our solar system, but it turns out there's actually an upper limit when it comes ...

A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union reclassified Pluto as ...

The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...

The love story between Pluto and Charon may have started with a kiss. A new study suggests the dwarf planet and its scarcely smaller moon likely came together in a collision that saw them conjoined ...

A Big 100-foot asteroid is set to make its close distance towards Earth tomorrow. Is it potentially hazardous? Know all the ...

NASA’s Parker Solar Probe could solve the mysteries of the solar wind and test Einstein’s theory of relativity.

At 7:28 this morning, the earth reached the point at which it is closest to the sun in its orbit, known as the perihelion.

Learn key facts about the Moon: from its significant distance and relative size compared to Earth to its distinctive color ...