The observable universe is a ball-shaped region of the universe comprising all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time, because ...

According to astronomers, there are approximately 200 billion trillion stars in our observable universe — chances are, ...

Our journey to comprehend the Universe’s edge begins with the concept of the observable Universe. This term refers to the portion of the cosmos that we can theoretically detect from Earth.

This is just a small part of the universe—less than 1% of the entire observable universe—but it is our galactic neighborhood. And it is good to know the geography of your neighborhood.

This is called the “heat death” of the Universe, but you can think of it instead as the death of heat. There will be no more differences in temperature anywhere, which means thermodynamics shuts down, ...

Looking halfway across the observable universe and expecting to see individual stars is considered a non-starter in astronomy, a bit like raising a pair of binoculars at the moon in hopes of ...

Astronomers setting their sights halfway across the observable universe recently identified the largest amount of individual stars ever detected so far away – a feat once considered near-impossible.