Add Yahoo as a preferred source to see more of our stories on Google. In a few billion years, the Milky Way and Andromeda, the nearest spiral galaxy, might collide. Future observers could be treated ...

For nearly three decades, astronomers have interpreted the faint luminosity of certain distant explosive stars as a sign of the Universe's runaway expansion. An inexorable acceleration, attributed to ...

Andromeda and the Milky Way merge. NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger Share Curious Kids is a series for children of all ages. If you have a question you’d ...

Dark energy—the term used to describe whatever is causing the universe to expand at an increasing rate—is one of the universe’s greatest mysteries. The most widely accepted theory currently suggests ...

The 2026 Conference of the Society of Catholic Scientists will take place June 5–7 at Mundelein Seminary near Chicago. The Society of Catholic Scientists (SCS) is preparing to gather for its ninth ...

What if time doesn't actually exist until something changes? Scientists at the University of Birmingham created a tiny "mini ...

Whether the universe will "end" at all is not certain, but all evidence suggests it will continue being humanity's cosmic home for a very, very long time. Our understanding of the future of the ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Whether the universe will "end" at all is not certain ...