This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Explore the true scale of the Solar System in this video, which illustrates the relative sizes of the planets and their ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

Riding alongside IMAP, NOAA's SWFO-L1 will serve as a dedicated solar alert system, monitoring space weather and energetic ...

NPR's Ari Shapiro talks with astronomer David Jewitt about what we can learn from the third interstellar object to have entered our solar system, a comet-like object known as 3I/ATLAS.

The gravitational influence of dark matter on stellar motions within galaxies, particularly the high velocities of stars in the Milky Way, is the primary evidence for its existence. This influence is ...

The European Space Agency-led Solar Orbiter mission has split the flood of energetic particles flung out into space from the ...