Of all the natural disasters that could befall us, only an Earth impact by a large comet or asteroid has the potential to end civilization in a single blow. Yet these near-Earth objects also offer tantalizing clues to our solar system’s origin, and someday could even serve as stepping-stones for space exploration. In this lecture, Donald Yeomans introduces readers to the science of near-Earth objects—its history, applications, and ongoing quest to find near-Earth objects before they find us. Yeomans takes readers behind the scenes of today’s efforts to find, track, and study near-Earth objects. He shows how the same comets and asteroids most likely to collide with us could also be mined for precious natural resources like water and oxygen, and used as watering holes and fueling stations for expeditions to Mars and the outermost reaches of our solar system.
Science in your inbox every Wednesday!
eSkeptic delivers great articles, videos, podcasts, reviews, event announcements, and more to your inbox once a week.
Please support the work of the Skeptics Society. Make the world a more rational place and help us defend the role of science in society.
Browse by Topic
Science Based Medicine vs. Alternative Medicine
Understanding the difference could save your life! In this superb 10-part video lecture series, Harriet Hall, M.D., contrasts science-based medicine with so-called “complementary and alternative” methods. The lectures each range from 32 to 45 minutes.
Is Terrorism an Existential Threat?
This free booklet reveals 10 myths that explain why terrorism is not a threat to our way of life or our survival.
The Top Ten Strangest Beliefs
Michael Shermer has compiled a list of the top 10 strangest beliefs that he has encountered in his quarter century as a professional skeptic.
Who believes them? Why? How can you tell if they’re true?
What is a conspiracy theory, why do people believe in them, and why do they tend to proliferate? Why does belief in one conspiracy correlate to belief in others? What are the triggers of belief, and how does group identity factor into it? How can one tell the difference between a true conspiracy and a false one?
The Science Behind Why People See Ghosts
Do you know someone who has had a mind altering experience? If so, you know how compelling they can be. They are one of the foundations of widespread belief in the paranormal. But as skeptics are well aware, accepting them as reality can be dangerous…
Top 10 Myths About Evolution (and how we know it really happened)
If humans came from apes, why aren’t apes evolving into humans? Find out in this pamphlet!
Learn to do Psychic “Cold Reading” in 10
Psychic readings and fortunetelling are an ancient art — a combination of acting and psychological manipulation.