Walkabout the Galaxy
Earth's upper atmosphere; galaxies
Astrophysics and Astronomy | Physics
In this episode we explore clouds at the edge of space in the Earth’s upper atmosphere and discoveries of galaxies far more distant than we have seen before. We also explore why it’s so difficult to define the edge of something as ordinary as a planetary system, like our own solar system. And from that discussion is born Gravity Man and Electromagnetism Woman! Tune in to learn more!
With so much going on in the world, it's more important than ever to be able to count on the stable things in life, like the speed of light and the length of the day. Unfortunately, Mother Earth doesn't always cooperate, shifting its mass around like a twirling ice skater through atmospheric dynamics, evolution of the cryosphere due to dynamic change, and core-mantle interactions, so that even the day doesn't line up with our clocks. That's when it time to get a leap second, and it to your day so the sun and atomic clocks are in harmonious accord. If you didn't get enough leap the first time around, feel free to help yourself to leap seconds. Leap seconds, tick different (Swatch).
© Joshua Colwell, All Rights Reserved
Length of Episode
Colwell, Joshua; Dove, Adrienne; and Cooney, James, "The Edges of Space, the Solar System, and the Universe" (2022). Walkabout the Galaxy Podcast. 213.