The Countdown, Episode 6 – Black Hole Neighbors, Asteroid Cooling and Water on Mars

Oct 5, 2012 | 1

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The Countdown is a biweekly video show highlighting the best stuff happening in space, astronomy and physics. In this episode: Black Hole Neighbors, Asteroid Cooling, SpaceX Launch, Nazi Iron Man from Space, Water on Mars

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1. quintessence 07:25 AM 10/21/12

Herein an excellent link explaining black holes and dark matter.

http://www.youtube.com/watch?v=8I9LQfWY6pA
Reply | Report Abuse | Link to this

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