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How Planets Got Their Names

Planet George? Dr. Bruce Betts has this week's Random Space Fact!

 


 

Mars Declaration from 1988

This throwback is long, but worth the watch! Hear the 1988 Mars Declaration from The Planetary Society as read by Carl Sagan, Gene Roddenbery, Isaac Asimov, Ann Druyan, Thomas Paine, Louis Friedman, Bruce Murray, Steve Allen, and Diane Ackerman just to name a few. Enjoy this lengthy piece of our history!

 


 

Intro Astronomy 2015. Class 13: Galaxies, the Universe, Life

Lecture 13 of Dr. Bruce Betts' 2015 online Introductory Planetary Science and Astronomy course covers galaxies (our place in the Milky Way, types of galaxies, Hubble Deep Field), the Universe (determining distances, expansion of the universe, Big Bang theory and evolution of the universe, WMAP and Planck results, dark matter, dark energy, neutrinos), and life in the universe (Earth life requirements, astrobiology, SETI). Recorded at California State University Dominguez Hills.

 


 

LightSail Then and Now

In 1976, Carl Sagan appeared on The Tonight Show to talk about a crazy new idea: solar sailing. Nearly 40 years later, The Planetary Society is realizing this dream with a new spacecraft called LightSail designed to propel through space on beams of sunlight.

 


 

If Mars Were the Size of a Gladius Sword...

How big is the Sun compared to Mars? Dr. Bruce Betts has this week's Random Space Fact!

 


 

Intro Astronomy 2015. Class 12: The Sun and Stars

Lecture 12 of Dr. Bruce Betts' 2015 online Introductory Planetary Science and Astronomy course covers the Sun (physical characteristics, zones, solar cycle, sunspots, flares, coronal mass ejections, fusion, etc.) and Stars and Stellar Evolution (star types and colors, evolution, HR Diagrams, birth and death phases, white dwarfs, neutron stars, black holes). Recorded at California State University Dominguez Hills.

 


 

What is Astrobiology?

OSIRIS-REx explores Astrobiology in this 321-Science video.

 


 

All those Asteroids with Amy Mainzer

How many asteroids has NEOWISE discovered? Dr. Bruce Betts has this week's Random Space Fact!

 


 

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