Travelers in the Night Eps. 749 & 750: Earth Glow & Asteroid Slam

The 365 Days of Astronomy

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

Today's 2 topics:

- In 1972 Apollo 16 astronauts took an ultraviolet image of the Earth from the Moon which shows that like the Sun, the Earth too, has a faint corona of gas surrounding it. Scientists are just beginning to explore how Earth's glow relates to our weather and climate.

- Humans are slamming projectiles into space rocks. These experiments will give us the know how to deal with a dangerous space rock which has our number on it.

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