Neil deGrasse Tyson
Neil deGrasse Tyson is an astrophysicist, science communicator, and director of the Hayden Planetarium in New York.
Circuit updated July 13, 2026
Tyson's single appearance is a masterclass in cold-showering a hot topic. He backs Obama's claim that aliens probably exist, then immediately strips it of the fun part, insisting a huge, old, chemically repetitive universe makes life elsewhere likely without putting a single body in a government freezer. His demand, bring out the alien, is the scientific method in work boots, aimed at a podcast culture that treats a retired official's ominous pause as evidence. The value of the segment is that he refuses both easy certainties, declining to play the debunker who sneers at every witness and the believer who thinks a Pentagon acronym is basically a spaceship. Probability is not proof, and a big universe is not the same as a corpse in the shed.
- Neil deGrasse Tyson says Kessler syndrome could wipe out 100 percent of satellites within a few orbits
“Orbital speed is is 17,000 miles an hour. That's way faster than a rifle bullet.” 18:46
- Neil deGrasse Tyson says Obama was right that aliens probably exist, but UFO believers still need to show the alien
“he said what is scientifically defensible that there probably aliens in the universe. Anyone who studied that problem will arrive at that conclusion.” 10:49
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“if I'm trying to track an asteroid that might be headed our way and have thousands of other streaks of light in my image, there's a chance I might miss the asteroid.”
Neil deGrasse Tyson · The Diary of a CEO -
“he said what is scientifically defensible that there probably aliens in the universe. Anyone who studied that problem will arrive at that conclusion.”
Neil deGrasse Tyson · The Diary of a CEO -
“No one has ever asked me, do I believe in elephants? Why? Because we've shown elephants. Okay, we have elephants. We've seen elephants.”
Neil deGrasse Tyson · The Diary of a CEO -
“I don't see why they wouldn't be given the size of the universe and the age in the universe and the ingredients of the universe.”
Neil deGrasse Tyson · The Diary of a CEO -
“Bring out the alien. If you're saying you got an alien in the shed in the back 40, just bring it out.”
Neil deGrasse Tyson · The Diary of a CEO -
“Orbital speed is is 17,000 miles an hour. That's way faster than a rifle bullet.”
Neil deGrasse Tyson · The Diary of a CEO
Neil deGrasse Tyson says Kessler syndrome could wipe out 100 percent of satellites within a few orbits
The astrophysicist’s real apocalypse scenario isn’t aliens or black holes, it’s orbital shrapnel moving faster than a bullet.
Neil deGrasse Tyson says Obama was right that aliens probably exist, but UFO believers still need to show the alien
The astrophysicist’s alien position is less X-Files and more Costco math: too many planets, not enough proof.