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Astrophysicist Neil deGrasse Tyson predicts that 99942 Apophis, a near-Earth asteroid and the namesake of an evil demon in Egyptian mythology, may collide with Earth in April 2029.
After a plunge into the Pacific, he says Apophis would create a tsunami "that ablates the entire coastline, wiping it clean of all traces of civilization."
Although Europa is not in the habitable zone, astrophysicist Neil deGrasse Tyson believes its billion-year-old ocean could support life.
"I want to go to Europa and go ice fishing," he says.
Astrophysicist Neil deGrasse Tyson asks Oliver Sacks about the ethics of neuroscience and the power to stop all hallucinations.
Astrophysicist Neil deGrasse Tyson argues Earth is not as an ideal environment for the existence of life as most people commonly think. "99 percent of all species that ever lived are now extinct," says Tyson. "That is not the signature of a planet that is in love with life."
Astrophysicist Neil deGrasse Tyson discredits the doomsday theory that Planet X, aka Nibiru, will return to our solar system in 2012, disrupting the Earth's polarity.
Nibiru, he says, is simply a "marvelous work of fiction."
After astrophysicist Neil deGrasse Tyson named Pluto a comet, the public outcry included "hate mail from 3rd graders."
He offers the reasons behind his controversial decision, eliciting help from "Pluto-lovers" in the audience.
Neil deGrasse Tyson says despite President George W. Bush's record on the environment and opposition to stem cell research, more money was allocated to science under the his administration than under Clinton.
"Funding for science under Republican administrations has been historically higher than under Democrats," he says.