Age

Is the “Methuselah star” really older than the Universe?

The Universe is precisely dated at 13.8…

How we know the Universe is 13.8 billion years old

The Universe is 13.8 billion years old, going back…

Is the Universe 13.8 or 26.7 billion years old?

For many years, cosmologists have claimed the Universe…

Ask Ethan: How do we know the Universe is 13.8 billion years old?

We confidently state that the…

Ask Ethan: When do we start counting the age of the Universe?

The Universe is 13.8 billion years old…

Wow! The Milky Way is almost as old as the Universe itself

Galactic archaeology has uncovered a…

Ask Ethan: How do we know the universe is 13.8 billion years old?

It’s been precisely 13.8 billion…

Ask Ethan: How Do We Know The Age Of The Solar System?

We’ve all heard the number: 4.5 billion years…

The Greatest Cosmic Puzzle: Astronomers Find Stars That Appear Older Than The Universe

Ask Ethan #99: How do we know the age of the Universe?