If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe, and where is its center?

Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years from now. The universe is nearing the halfway point of what may be a 33-billion-year lifespan, according ...

The 3I/ATLAS comet was first spotted in July near Jupiter after it entered our solar system from another universe. Here’s ...

Evidence of this quantum layer may be coming soon. Here’s what you’ll learn in this story: Physicists are still puzzling over ...

Astrophysicists at the University of Chicago have developed physics-based models suggesting that dark energy could be ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density – given that the universe contains a lot of relatively empty space, could ...

According to the model, dark matter may have started as particles that were hot, light, massless, and fast. As the universe ...