For more than a century, physics has been built on two great theories. Einstein's general relativity explains gravity as the ...

Astronomers are using radio pulses from space to find missing baryonic matter and learn about supermassive black holes, ...

Only after adding a massive, invisible halo of dark matter to their computer models could the researchers reproduce what they ...

Dark matter has bewildered scientists for centuries. It makes up most of the universe’s matter, but it can’t be seen directly ...

Let me first tell you how mysterious dark energy is. Einstein added a cosmological constant to his equations to keep the universe 'static,' but later regretted it, calling it the biggest mistake of ...

A Rutgers-led team of scientists has uncovered evidence of how galaxies expand by tracing the invisible scaffolding of the ...

For a quarter century, cosmology has leaned on one framework to explain how the universe expands. Known as the ΛCDM model, it ...

The "dark universe detective" space telescope Euclid has discovered its first Einstein ring in the process, learning about dark matter at the heart of a distant galaxy.

Astronomers use many methods to determine this number, including gravitational lensing, the universe’s expansion rate, and ...