"It is larger than the size of most anything to which it might be compared." The universe's largest structure, the Hercules-Corona Borealis Great Wall, was already a challenge to explain with ...

If you thought the cosmic web was tangled enough, think again. A team of astrophysicists recently used gamma-ray bursts—those spectacular, enigmatic explosions of energy from the farthest ...

About half of the non-dark matter in the universe cannot be accounted for by stars and galaxies alone. Now, scientists say previously undetected clouds of hydrogen gas could finally reveal it.

Although we’re still searching for observational evidence of dark matter, scientists haven’t been able to account for about 15 percent of the regular matter in the universe with just stars ...

Get Instant Summarized Text (Gist) The universe may rotate extremely slowly, potentially resolving the Hubble tension, a discrepancy between two methods of measuring the universe's expansion rate ...