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 October 2025.

Today's 2 topics:

- The Lagrange point L4 is 60° ahead of Mars whereas L5 is 60° behind Mars on the red planet's orbital path about the Sun. An object placed at either of these locations is trapped gravitationally and is likely to remain there indefinitely. The Mars L4 and L5 locations could provide a permanent place for staging and resupply missions to Mars and would give humans a different view of space weather and its effects on our home planet.

- Obtaining accurate data on the Earth's climate and how it is changing is vital to inform agriculture , insurance risks, business planning, disaster preparedness, financial investments, wild fire mitigation, and national security. The USA should not be flying blind and relying on Europe and China for the data we need.

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