As Earth makes its annual trip around the Sun, we feel the impacts of its journey in the form of seasons. Our planet’s tilt in relation to the Sun determines what season we experience here on Earth. But, did you know that the Sun goes through seasons too? Delores Knipp, Dean Pesnell and Sabrina Savage explain.
Aug 4
Why Webb's Earliest Galaxies Are Blowing Scientists' Minds
With the James Webb Space Telescope, we are seeing the early universe like never before. Webb produces beautiful images and detailed scientific data that leave astronomers in awe. In this episode, Mic Bagley, a NASA scientist on the Webb team, guides us through new discoveries ma ... Show More
27m 54s
Jun 24
How Lying In Bed For 60 Days Helps Astronauts
In space, microgravity changes the body. Body fluids shift from the legs toward the head, the back of our eyes flatten, we lose muscle strength, our bones lose some of their density, and even the amount of blood pumped by the heart with each beat drops. To learn more about how mi ... Show More
27m 17s
Jun 4
Cosmic Dawn with Nobel Laureate John Mather
The James Webb Space Telescope is doing something astronomers dreamed about for decades: peering into our universe’s early past, a period known as cosmic dawn. A new NASA documentary—also called Cosmic Dawn—chronicles the inside story of Webb’s design, construction, and launch. J ... Show More
18m 47s
Aug 22
Le Soleil tourne-t-il sur lui même ?
Rediffusion Au cœur du système qui porte son nom, le Soleil est apparu voilà environ 4,5 milliards d'années. On sait, depuis Galilée et Copernic, que la Terre autour de notre étoile.Mais qu'en est-il du Soleil ? Est-il affecté, lui aussi, d'un mouvement de rotation ? La réponse e ... Show More
2m 11s
Apr 2021
Pourquoi les éclipses de Soleil sont vouées à disparaitre ?
Rediffusion (je reviens le 26 avril ;)Les interactions entre la Terre et la Lune expliquent l'éloignement de notre satellite naturel. Ce phénomène, ainsi que la situation actuelle du Soleil, expliquent la raréfaction, puis la fin programmée des éclipses solaires totales... Voir A ... Show More
2m 1s
Feb 2024
Exploring solar eclipses through time
This week on Planetary Radio, we delve into the evolution of humanity's relationship with one of our planet's most awe-inspiring phenomena: total solar eclipses. Ed Krupp, the director of Griffith Observatory in Los Angeles, will share insights from the fascinating field of archa ... Show More
52m 8s