Astronomy Cast Ep. 442: Destroy and Rebuild Pt. 6: Magnetic Pole Reversal

If we look back into the geologic record of the Earth, it appears that our planet’s magnetic field flips polarity every few hundred thousand years or so. Why does this happen? When’s it supposed to happen next? Is it dangerous? Visit the Astronomy Cast Page to subscribe to the audio podcast! We usually record Astronomy […]

The post Astronomy Cast Ep. 442: Destroy and Rebuild Pt. 6: Magnetic Pole Reversal appeared first on Universe Today.

Astronomy Cast Ep. 417: Error 417: Expectation Failed

In all fields of science, sometimes more is learned when you fail at what you’re trying to do than when you succeed. So what new science discoveries have failed expectations given us in astronomy? Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as a live Google+ Hangout on […]

The post Astronomy Cast Ep. 417: Error 417: Expectation Failed appeared first on Universe Today.

Astronomy Cast Ep. 416: Fireballs from Space!

Every now and then we look up and see bright fiery balls falling from the sky. Don’t panic, these are just bolides. Sometimes they leave trails, sometimes they explode, and sometimes they survive all the way to the ground. Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as […]

The post Astronomy Cast Ep. 416: Fireballs from Space! appeared first on Universe Today.

Astronomy Cast Ep. 415: Temperature of the Universe

The temperature of the Universe can vary a dramatic amount from the hot cores of stars to the vast cold emptiness of deep space. What’s the temperature of the Universe now, and what will it be in the future? Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as […]

The post Astronomy Cast Ep. 415: Temperature of the Universe appeared first on Universe Today.

Astronomy Cast Ep. 414: Navigating Far

In our last episode, we talked about what it’ll take to navigate across the Solar System. In this episode we scale things up and speculate how future civilizations will navigate to other stars and even other galaxies. Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as a live […]

The post Astronomy Cast Ep. 414: Navigating Far appeared first on Universe Today.

Astronomy Cast Ep. 413: Navigating Near

It’s hard enough finding your way around planet Earth, but what do you do when you’re trying to find your way around the Solar System? Today we’ll talk about how spacecraft navigate from world to world. Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as a live Google+ […]

The post Astronomy Cast Ep. 413: Navigating Near appeared first on Universe Today.

Astronomy Cast Ep. 412: The Color of the Universe

What color is the Universe? Turns out this isn’t a simple question, and one that scientists have really been unable to answer, until now! Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as a live Google+ Hangout on Air every Monday at 12:00 pm Pacific / 3:00 pm […]

The post Astronomy Cast Ep. 412: The Color of the Universe appeared first on Universe Today.

Astronomy Cast Ep. 411: The Science of Sunset Colors

We all enjoy beautiful, multicolored sunsets. But what causes the brilliant oranges, pinks and purples that we see, and why does it change from day to day and season to season? Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as a live Google+ Hangout on Air every Monday […]

The post Astronomy Cast Ep. 411: The Science of Sunset Colors appeared first on Universe Today.