Big Bang
What is Gravitational Lensing?
Gravity's a funny thing. Not only does it tug away at you, me, planets, moons and stars, but it can…
Is Everything Actually Shrinking?
Whoa, here's something to think about. Maybe the Universe isn't expanding at all. Maybe everything is actually just shrinking, so…
What Is The Biggest Thing in The Universe?
Think big. Really big. Like, cosmic big. How big can things in the Universe get? Is a galaxy big? What…
How Many Stars Did It Take To Make Us?
You know the quote, we're made of stardust. Generation after generation of stars created the materials that make us up.…
Why Is Space Black?
Since there are stars and galaxies in all directions, why is space black? Shouldn't there be a star in every…
A Universe of 10 Dimensions
When someone mentions "different dimensions," we tend to think of things like parallel universes - alternate realities that exist parallel…
Astronomy Cast Ep. 360: Modern Women: Jocelyn Bell Burnell
Jocelyn Bell Burnell is an Irish astronomer, best known for being part of the team that discovered pulsars, and the…
New Cosmological Theory Goes Inflation-Free
The Cosmic Microwave Background (CMB) radiation is one of the greatest discoveries of modern cosmology. Astrophysicist George Smoot once likened…
What Came Before the Big Bang?
Astronomers are pretty sure what happened after the Big Bang, but what came before? What are the leading theories for…
Subaru Telescope Spots Galaxies From The Early Universe
It's an amazing thing, staring into deep space with the help of a high-powered telescope. In addition to being able…