The 365 Days of Astronomy Travelers in the Night Eps. 317E & 318E: Psyche Water & Caves of Mars
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 August 2024.
Today's 2 topics:
- The asteroid Psyche may be one of the most expensive pieces of real estate in the solar system. It is a small world about 116 miles in diameter and is composed of almost pure nickel-iron metal. It is located in the asteroid belt between Mars and Jupiter. Scientists find evidence that Psyche may be the exposed core of a planet which was destroyed by collisions as it was trying to form long ago.
- Presently the surface of Mars is very dry and any liquid water that reaches it quickly boils away since the martian atmospheric pressure is what you could experience in your space suit 30 to 50 miles above the Earth's surface. However, since the martian gravity is about 1/3 that of the Earth, it's crust is less dense and more porous than what we find on our home planet.
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