Feb 24, 2025
Astronomy Cast Ep. 745: How We Know If Asteroids Will Attack
By Fraser Cain & Dr. Pamela Gay
Streamed live Feb 20, 2025.
I’m sure you’ve heard the news, asteroid 2024 YR4 has a tiny chance of hitting Earth in 2032. How do astronomers discover these dangerous asteroids, measure their future impact risk and track...
Feb 17, 2025
Astronomy Cast Ep. 744: Lunar Time
By Fraser Cain & Dr. Pamela Gay
Streamed live on Feb 10, 2025.
What time is it? OK, fine, what time is it on the Moon? The Moon orbits the Earth, so it doesn’t fall into a specific time zone. Also, there’s lower gravity on the surface of the Moon, which changes the rate that clocks...
Feb 10, 2025
Astronomy Cast Ep. 743: What Else Can We Learn From Gravitational Waves?
By Fraser Cain & Dr. Pamela Gay
Streamed live on Feb 3, 2025.
Just a few years ago LIGO detected the first direct evidence of gravitational waves coming from colliding black holes. And there you have it. Boom! Black holes collide! But that wasn’t...
Feb 3, 2025
Astronomy Cast Ep. 742: Atmospheric Gravity Waves
By Fraser Cain & Dr. Pamela Gay
Streamed live on Jan 27, 2025.
Hosted by: Fraser Cain and Dr. Pamela L. Gay
Gravity Waves ... not gravitational waves ... move atmospheres and make pretty clouds. Have you ever looked up into the sky and seen bizarre cloud formations that...