From StarTalk.
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Are alien spacecraft here on Earth? Neil deGrasse Tyson and comedian Chuck Nice discuss the UAP hearings, unexplained cosmic phenomena, dark matter, and more with astrophysicist and NASA UAP chair David Spergel.
David reveals what it’s like to investigate UFOs scientifically, explaining why most sightings turn out to be lens flares or misidentified objects— but also why the 1% of unexplained events still intrigue researchers. Learn how smartphones and apps could revolutionize data collection, making it easier to authenticate and analyze potential UAP sightings. Plus, discover why phenomena like ball lightning and lightning sprites were initially dismissed, only to be explained later with better technology.
Switching gears, Neil and David dive into dark matter and energy. Learn how groundbreaking tools like the Nancy Grace Roman Space Telescope and collaborations with ESA’s Euclid mission aim to answer fundamental questions about the universe. We discuss computational astrophysics and the Atlas of Peculiar Galaxies. From UFOs to cutting-edge astrophysics, this episode offers a clear-eyed look at the mysteries of the universe.
Timestamps:
00:00 – Introduction: David Spergel
01:45 – How Much is Unexplained?
9:07 – The UAP Hearings
13:51 – Would NASA Keep the Aliens Secret?
18:28 – Conspiracy & Eyewitness Testimony
31:19 – Dark Matter & The Nancy Grace Roman Telescope
40:07 – Star Evolution & Computational Astrophysics
44:56 – Dark Matter & Dark Energy
48:39 – Gravitational Waves at the Begining of the Universe
53:04 – A Cosmic Perspective
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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
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