Archive | History

Ep. 466: Origins of Zero (0)

We depend on zero for our math to work right, but this number was actually invented in fairly recent times. Why do we need zero? Was it inevitable? We usually record Astronomy Cast every Friday at 3:00 pm EST / 12:00 pm PST / 20:00 PM UTC. You can watch us live on here on […]

Continue Reading 0

Ep. 458: The Science of Cassini

And now Cassini’s gone. Smashed up in the atmosphere of Saturn. But planetary scientists are going to be picking through all those pictures and data for decades. Let’s look back at some of the science gathered up by Cassini so far, and we can still learn from this epic journey. We usually record Astronomy Cast […]

Continue Reading 0

Ep. 447: Animals in Space Pt. 3: Dogs, Monkeys and More

For the final episode in our 3-part episode about animals in space, we look at the largest animals to go to orbit. And I’ll just warn you now, this is going to be a really sad episode. We usually record Astronomy Cast every Friday at 1:30 pm PDT / 4:30 pm EDT/ 20:30 PM UTC […]

Continue Reading 0

Ep. 446: Animals in Space Pt. 2: Mice and Other Small Animals

Last week we talked about how the smallest creatures behave in space, but now we move up in size a little to small animals, like mice. What missions have they flown on, and how does microgravity affect their biology? We usually record Astronomy Cast every Friday at 1:30 pm PDT / 4:30 pm EDT/ 20:30 […]

Continue Reading 0

Ep. 445: Animals in Space Pt. 1: Insects and Arachnids

We’ve talked about animals traveling to space in the past, but it’s time to take another look, with many other creatures making the trip to the void. Today we’re going to talk about the spineless insects and arthropods, and those tough-as-nails waterbears – tardigrades. We usually record Astronomy Cast every Friday at 1:30 pm PDT […]

Continue Reading 0

Ep. 432: Geoglogic Ages of Mars – From Wet and Wild to Desolate Desert

Today, Mars is a desolate wasteland, with dusty red rocks and sand stretching out to the horizon. But billions of years ago, it was a vastly different world. It was blue, with oceans, rivers, lakes, and maybe life? Let’s tell the story of geology on Mars, and we got from that world to the one […]

Continue Reading 0
images

Ep. 419: DragonCon 2016 Live – Rocket Girls

Welcome back to our new season of Astronomy Cast! This episode is a special live show that took place at DragonCon 2016 in Atlanta, GA. Pamela hosted a panel of amazing scientists and engineers who all happen to be women, and they discussed the unsung women of NASA and the early Space Age and their […]

Continue Reading 1
Pmilurey

Ep. 376: The Miller-Urey Experiment

Evolution explains how life adapts and evolves over eons. But how did life originate? Chemists Miller and Urey put the raw chemicals of life into a solution, applied an electric charge, and created amino acids – the building blocks of life. Download the show [MP3] | Jump to Shownotes | Jump to Transcript (more…)

Continue Reading 0
Millikan’s_oil-drop_apparatus_1

Ep. 372: The Millikan Oil Drop

In 1909 Robert Millikan devised an ingenious experiment to figure out the charge of an electron using a drop of oil. Let’s talk about this Nobel Prize winning experiment. Download the show [MP3] | Jump to Shownotes | Jump to Transcript (more…)

Continue Reading 0
eddington_experiment

Ep. 371: Eddington Eclipse Experiment

At the turn of the 20th Century, Einstein’s theory of relativity stunned the physics world, but the experimental evidence needed to be found. And so, in 1919, another respected astronomer, Arthur Eddington, observed the deflection of stars by the gravity of the Sun during a solar eclipse. Here’s the story of that famous experiment. Download […]

Continue Reading 2

Powered by WordPress. Designed by WooThemes