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COSMOS: When Carl Sagan sent me a letter

One of the nice surprises in last night’s Cosmos reboot with Neil deGrasse Tyson was the show’s tribute to Dr. Carl Sagan at the end of the program. Standing on the same seaside cliff in Northern California where Sagan filmed some of his scenes from the original series, deGrasse Tyson…

WATCH LIVE: Neil deGrasse Tyson in ‘Cosmos’ premiere and Q&A event

Astrophysicist Neil deGrasse Tyson is scheduled to participate in a live online Q&A discussion Tuesday night at 9 p.m. EST and screening of the premiere for the new version of the science exploration show Cosmos. The 13-episode miniseries, a successor to Carl Sagan’s popular series, debuts on Sunday, with deGrasse…

Neil deGrasse Tyson explains why there are no green stars

In this clip from his radio show “Star Talk,” astrophysicist Neil deGrasse Tyson explains that while there are white stars, blue stars and red stars, there are no green stars. “There’s green in space,” Tyson said, “there’s just no green stars.” “There’s actually green emissions from gas clouds in space,”…

Neil deGrasse Tyson fact-checks new movie ‘Gravity’

For the record, astrophysicist Neil deGrasse Tyson was among those who enjoyed the highly-acclaimed new movie Gravity, but he still took to Twitter to question many of the film’s plot points. The Huffington Post reported on Monday that Tyson spent some time on Sunday speculating on what he called the…

Neil deGrasse Tyson: Life in solar system most likely on other planets’ moons

Author and astrophysicist Neil deGrasse Tyson said in a video released Thursday that if humanity hopes to find other forms of life in this solar system, then our next exploratory missions should target not our interplanetary neighbors, but their moons. Going to Venus, he said, would be a terrible idea.…

Neil deGrasse Tyson disproves idea of ‘the speed of dark’

Astrophysicist Neil deGrasse Tyson shot down the idea of the “speed of dark” on his StarTalk podcast while recognizing that the idea does have a literary appeal. “What is the speed of dark? If darkness is the absence of light, dark has no speed at all,” deGrasse Tyson explained to…

Neil deGrasse Tyson explains how gravity affects the flow of time

On Wednesday’s edition of his popular “Star Talk” radio show, astrophysicist Neil deGrasse Tyson explained how gravity affects the flow of time and how time passes on different planets with different gravitational fields. A listener wrote in to “Star Talk” to ask if it’s the same time everywhere in the…

Neil deGrasse Tyson explains the vacuum of space

On Wednesday, astrophysicist Neil deGrasse Tyson endeavored to explain why space is a vacuum and what exactly we mean when we say that. Tyson was answering a listener question, “If we take an open jar into space and close it, thereby filling it with the vacuum of space, what would…

Neil deGrasse Tyson: Elon Musk’s SpaceX program won’t be first to send people to Mars

Astrophysicist and host of StarTalk Radio Neil deGrasse Tyson is not optimistic that Elon Musk’s for-profit space tourism company SpaceX will be the first to ferry human beings to the planet Mars. In an interview with Business Insider, the scientist said that new space exploration missions are too dangerous for…

Neil deGrasse Tyson explains why Santa Claus actually lives near Earth’s South Pole

While discussing whether Earth’s magnetic field could reverse in the future, astrophysicist Neil deGrasse Tyson noted that Santa Claus actually lived on Earth’s South Pole. “The North Magnetic Pole of the Earth is Earth’s South Pole,” he explained on Star Talk Radio. “That is why all north poles of magnets…

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