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 July 2025.

Today's 2 topics:

- When Asteroid hunters discover a new object it is given a score ranging from 0 which means it is likely to be a distant main belt asteroid up to 100 which means that it is likely to come near to us. Each newly discovered asteroid which receives a score of 65 or greater is posted on the Minor Planet Center's Near Earth Object Confirmation Page so that telescopes around the world can track it to estimate it's size as well as to refine our knowledge of it's orbit around the Sun.

- The energy required to lift water, food, and construction materials from the Earth's surface is very expensive. Asteroids come relatively close to Earth and could provide space colonists with metals, carbon, water, and the other important ingredients of modern life. Most space rocks like most terrestrial rocks may be pretty and interesting but they are not a practical source of the materials humans use and need.

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