Imagine drifting through space in a place so empty that you wouldn’t see a single star, planet, or galaxy in any direction. This is the Boötes Void, one of the largest known empty regions in the ...

Could it be that the nature of the universe is tricking us, merely because of our location? The ongoing “Hubble tension” the intransigent discrepancy between the universe’s local and cosmic expansion ...

One of the biggest mysteries in cosmology is the rate at which the universe is expanding. This can be predicted using the standard model of cosmology, also known as Lambda-cold dark matter (ΛCDM).

The Milky Way galaxy in which our solar system lies may exist in a "giant void", where space is about a fifth as dense as the universal average. This is the conclusion of a team of researchers from ...

Earth and the entire Milky Way galaxy might be sitting inside an enormous, mysterious void—a giant cosmic hole making our universe expand faster right here than anywhere else. This unusual idea, ...

The universe’s expansion makes galaxies move away from each other. The further away they are from us, the more quickly they move. The relationship between a galaxy’s speed and distance is governed by ...