Big Bang
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…
Where’s All The Antimatter?
One of the biggest mysteries in the Universe is the fact there there's matter, and not antimatter. Where did it…
What’s Causing The Universe To Expand?
We've all heard that the Universe is expanding, but why is it expanding? What's the force pushing everything outwards? If…
When Did the First Stars Form?
Shortly after the Big Bang, the Universe had cooled to the point that the first stars could form out of…
Why Can’t We See the Big Bang?
Since telescopes let us look back in time, shouldn't we be able to see all the way back to the…