Comet C/2025 A6 — also known as Lemmon — will make its closest approach to Earth on Tuesday night, Oct. 21, and will continue ...

We have not been able to detect dark matter yet, even though there are many aspects of the universe that suggest the existence of invisible matter. In one new theory, it is possible that dark matter ...

The new data seem to indicate that the cosmological constant is negative, and that the universe will end in a Big Crunch,” ...

Astronomer Vera Rubin, now honored on a U.S. quarter, transformed our understanding of the universe by uncovering powerful evidence of dark matter. Her groundbreaking work revealed that most of the ...

Now, more than 150 years later, a team of Japanese physicists are resurrecting the concept to solve one of cosmology’s longest-standing riddles: Why does the universe teem with matter, but shun ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

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

A faint radio "whisper" from ancient hydrogen reveals the universe was heating up long before it filled with starlight.

Gazing up at the stars at night, it’s easy to imagine that space goes on forever. But cosmologists know that the universe actually has limits. First, their best models indicate that space and time had ...