Astronomy Cast Archives - 365 Days of Astronomy

Podcaster: Fraser Cain & Dr. Pamela Gay Title: Astronomy Cast: Ep.749: Dark Energy Changing Over Time Organization: Astronomy Cast Link: http://www.astronomycast.com Description: Streamed live on Mar 24, 2025. The Hubble Tension is a vexing problem, with astronomers measuring the expansion of the Universe at different points in its history and getting different results. Errors have […]

The post Mar 31st: Dark Energy Changing Over Time appeared first on 365 Days of Astronomy.

It’s time for an update on fast radio bursts, a phenomenon we’ve only known about for a few decades. In this time astronomers have learned a tremendous amount them.

The post Mar 24th: Fast Radio Bursts appeared first on 365 Days of Astronomy.

Most planets orbit stars. That’s the rule, right? Well, maybe not. Sometimes planets just go rogue. Let's learn about planets living free from stars. 

The post Mar 17th: Rogue Planets appeared first on 365 Days of Astronomy.

We’re finally ready to deal with the topic you’ve all been waiting for: Schwarzschild swirlers, Chandrasekhar crushers, ol’ matter manglers, sucking singularities… black holes

The post Mar 10th: Black Holes Big & Small appeared first on 365 Days of Astronomy.

What causes dust storms and how do they work differently on the worlds in the solar system. But what about the exoplanets?

The post Mar 3rd: Dust Storms appeared first on 365 Days of Astronomy.

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 the changes over time? When should we panic?

The post Feb 24th: How We Know If Asteroids Will Attack appeared first on 365 Days of Astronomy.

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. Well… It’s time to introduce Lunar Time. 

The post Feb 17th: Lunar Time appeared first on 365 Days of Astronomy.

A few years ago LIGO detected gravitational waves coming from colliding black holes. What else can we learn from gravitational black holes?

The post Feb 10th: What Else Can We Learn From Gravitational Waves? appeared first on 365 Days of Astronomy.

Have you ever looked up into the sky and seen bizarre cloud formations that look like waves on the ocean? These are gravity waves.

The post Feb 3rd: Atmospheric Gravity Waves appeared first on 365 Days of Astronomy.