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Travelers in the Night Eps. 363E & 364E: House Sized Space Rocks & Jupiter

Travelers in the Night Eps. 363E & 364E: House Sized Space Rocks & Jupiter

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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

From November 2025.

Today's 2 topics:

- Throughout history small close approaching space rocks have
been a part of our environment. Now, thanks to improved
telescopes and cameras, asteroid hunters are routinely
discovering these small asteroids as they pass closer than the
Moon is to us. Since these tiny asteroids are only bright enough
to detect for a few days out of their long, many month duration
paths about the Sun, astronomers have had difficulty in
determining how many of these small space rocks may exist in near
Earth space. This effort received more emphasis when a house
sized space rock exploded over Chelyabinsk, Russia in 2013
releasing about 10 times the energy of the Hiroshima atomic bomb.

 

- Jupiter has been observed throughout human history and is so
bright that you can even spot it under the artificial light dome
of one of our cities. Even so it is less than 40 years ago that
we were first able to view Jupiter in detail as the Voyagers
streaked by it. Jupiter contains more than twice the mass of all
of the other planets, dwarf planets, asteroids, and comets in our
solar system combined. Eons ago, our solar systems very own giant
planet, Jupiter, appears to have cleared out the inner solar
system leaving enough rocky debris to form Mercury, Venus, Earth,
and Mars. 

 

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