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

Dark matter is a type of matter that does not emit, absorb, or reflect light, making it invisible to telescopes.

In fact, the Euclid Consortium, the international group managing the European Space Agency's Euclid space telescope, just ...

A new study from Tel Aviv University has predicted, for the first time, the groundbreaking results that can be obtained from ...

However, the diameter of the observable universe is said to be over 900 billion light-years, right? Oh yes, the Beijing ...

This article, originally titled "The Man Who Discovered the Universe," is from the Summer 2025 issue of Air & Space Quarterly ...

What is the source of dark matter and how can astronomers identify it? This is what a recent study published in Nature Astronomy hopes to address as an int | Space ...

The Big Bang Theory remains the most accepted explanation for how the universe began. This documentary explores the science, ...

Astronomers using the Webb Telescope may have found a new type of object: cold, glowing black hole stars from the early ...

The key test passed by sPHENIX to prove it is ready to measure the properties of quark-gluon plasma is called a "standard candle" in particle physics. This isn't to be confused with Type 1a supernovas ...

Astronomers saw past the blinding light of a quasar, only to find a supermassive black hole that's much smaller than ...

The universe's matter-antimatter asymmetry, where matter significantly outweighs antimatter despite their theoretically equal creation at the Big Bang, remains a major unsolved problem in physics.