THE AMBITIOUS DAWN MISSION, launched in September 2007, is one of NASA’s most remarkable ventures into the solar system. The spacecraft has recently completed a spectacular exploration of Vesta and is now traveling to Ceres; these were among the last uncharted worlds in the inner solar system prior to Dawn. It is the only spacecraft ever to orbit an object in the asteroid belt. Such a mission would be impossible without the use of ion propulsion, a technology that has mostly been in the domain of science fiction, but which was tested extensively on the Deep Space 1 mission, paving the way for Dawn. In this lecture, Dr. Marc Rayman, Dawn’s Chief Engineer and Mission Director at JPL, describes the Dawn mission and its use of ion propulsion as well as its two exotic destinations. He also shares the excitement and profundity of controlling a spacecraft in deep space.
Skeptic: Examining Extraordinary Claims and Promoting Science
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To Boldly Go…Well, You Know:
NASA’s Dawn Mission to the Asteroid Belt
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The Believing Brain
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In this, his magnum opus, Dr. Michael Shermer presents his comprehensive theory on how beliefs are born, formed, nourished, reinforced, challenged, changed, and extinguished. Sam Harris calls The Believing Brain “a wonderfully lucid, accessible, and wide-ranging account of the boundary between justified and unjustified belief.” Leonard Mlodinow calls it “a tour de force integrating neuroscience and the social sciences.”
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Top 10 Myths About Evolution (and how we know it really happened)
This concise pamphlet provides answers to common objections to evolution, such as: If humans came from apes, why aren’t apes evolving into humans?; Only an intelligent designer could have made something as complex as an eye; The second law of thermo-dynamics proves that evolution is impossible; Evolution can’t account for morality; and more…
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Top 10 Things You Should Know About Alternative Medicine
Harriet Hall, MD (aka the SkepDoc), shares her wit and wisdom about alternative medicine including: chiropractic, the placebo effect, homeopathy, acupuncture, and the questionable benefits of organic food, detoxification, and ‘natural’ remedies.
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Learn to be a Psychic in 10
Easy Lessons
Psychic readings and fortunetelling are an ancient art — a combination of acting and psychological manipulation. While some psychics are known to cheat and acquire information ahead of time, these ten tips focus on what is known as “cold reading” — reading someone “cold” without any prior knowledge about them.