The biggest rainbow in the solar system was just captured by newly-launched spacecraft as NASA scientists study the sun and ...

Incredible new images of the sun's surface provide an unprecedented view of sunspots and other solar activity.

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Astronomers have discovered that the Jupiter, the largest planet in our Solar System, was once so big that it could have held ...

The 585 B.C. Eclipse of Peace turned fear into ceasefire, as a solar eclipse halted war and reshaped ancient views of the ...

NASA compares the universe's biggest black holes with "each other and to our solar system," in this Goddard Space Flight Center animation. Credit: NASA's Goddard Space Flight Center Conceptual Image L ...

At the very edge of our solar system, beyond the grasp of Neptune and even past the icy sprawl of Pluto’s domain, a new ...

A decade after the release of "The Martian" and a decade out from the world it envisions, how close is reality to fiction?

Even in our own solar system, distances seem infinite. Think of driving continuously at highway speed to Pluto. It would take ...

MISTRAL is a new-generation receiver for observations at millimeter wavelengths, built as part of the recent project to upgrade the Sardinia Radio Telescope for the study of the high-frequency radio ...

Naturally, the aurora on our solar system's largest planet is hundreds of times brighter and more energetic than our own Northern lights.

At least three city-killing asteroids that could strike Earth are hiding behind our closest neighbor in the solar system.