Light-year

Is The Universe Infinite

Can the universe be infinite? The observable universe is finite in that it hasn’t existed forever. It extends 46 billion … More

What Is The Biggest Galaxy

What is the biggest galaxy in the whole universe? The biggest known galaxy, first described in a 1990 study from … More

Does Outer Space End

Does the space have an end? Scientists now consider it unlikely the universe has an end – a region where … More

How Old Is Our Galaxy

Is our galaxy the oldest? Our universe is about 13.8 billion years old, so most galaxies formed when the universe … More

Do Wormholes Exist

Are wormholes a real thing? Wormholes — shortcuts in space and time — have long been a staple of science … More