Planetesimals Are Buffeted by Wind in their Nebula, Throwing Debris into Space

Before planets form around a young star, the protosolar disk is populated with innumerable planetesimals. Over time, these planetesimals combine…

5 months ago

Astronomy Cast Ep. 405: Method Not Found

Last week we talked about knowledge, what we do and don’t know. This week we talk about questions which are…

8 years ago

What is the Higgs Boson?

What is this thing we keep hearing about - the Higgs Boson, and why is it important? (more…)

8 years ago

Astronomy Cast Ep. 395: The Standard Model – Baryons and Beyond

In the last few episodes, we’ve been talking about the standard model of physics, explaining what everything is made up…

9 years ago

Astronomy Cast Ep. 394: The Standard Model – Bosons

All fundamental particles are either fermions or bosons. Last week we talked about quarks, which are fermions. This week we'll…

9 years ago

Astronomy Cast Ep. 393: The Standard Model – Leptons & Quarks

Physicists are getting a handle on the structure of the Universe, how everything is made of something else. Molecules are…

9 years ago

What if a Black Hole Met an Antimatter Black Hole?

Would shooting a black hole into an antimatter black hole destroy them both? (more…)

9 years ago

Astronomy Cast Ep. 382: Degenerate Matter

In some of the most extreme objects in the Universe, white dwarfs and neutron stars, matter gets strange, transforming into…

9 years ago

Astronomy Cast Ep. 374: Stern-Gerlach Experiment

In the world of quantum mechanics, particles behave in discreet ways. One breakthrough experiment was the Stern-Gerlach Experiment, performed in…

9 years ago

How Do We Know Dark Matter Exists?

Dark matter can't be seen or detected by any of our instruments, so how do we know it really exists?…

9 years ago