Ultra-faint dwarf galaxies—tiny satellite galaxies orbiting the Milky Way—have long been seen as cosmic fossils. Now, a new ...

The Dark Energy Spectroscopic Instrument, or DESI, has finished its planned 3D map of the universe — but the work is far from over. Carnegie Mellon University researchers are already pushing the ...

The concept of space is so intriguing that it fascinated our ancestors, and to this day, humans have been trying to figure out the big mysteries that it possesses. Even with all the technology that we ...

Dive into 25 Unanswered Questions About The Universe that baffle scientists. Explore dark energy, dark matter, the Big Bang, ...

Since humanity's earliest days, people have looked up at the stars, using science, art, religion, philosophy, mathematics, and any other tool at their disposal to better understand the complicated and ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In 1935, ...