NOVADay the Dinosaurs Died Season 44 Episode 21 | 53m 30s 66 million years ago, a seven-mile-wide asteroid collided with Earth, triggering a chain of events that coincide with the end of the dinosaurs. But experts have long debated exactly what happened when the asteroid struck and how the giant beasts met their end. Now, scientists have uncovered compelling new clues about the catastrophe. Aired: 12/06/17 Expires: 12/26/20 Rating: TV-PG Closed CaptioningVideo has closed captioning.Buy Now:PBSBuy DVDs AppleBuy on iTunes checkmarkAdd to WatchlistWatch PreviewProblems Playing Video?Report a ProblemClosed CaptioningShare:Share this video on FacebookFacebookShare this video on TwitterTwitterShare this video on Google PlusGoogleShare this video via EmailE-mailEmbedEmbed Code for this videoEmbed CodeNOVADay the Dinosaurs DiedSeason 44 Episode 21Width in pixels px Height in pixels px Copied to your clipboardLabelCopy to ClipboardClick to copy embed code for videoCloseCloseReport a ProblemBefore you submit an error, please consult our Troubleshooting Guide.Type of ErrorVideo doesn't loadVideo loads, but doesn't playVideo jumps back/forwardOnly audio is streamingSponsorship playback errorOtherPlease add more detailsCancelSubmit ReportYour report has been successfully submitted. Thank you for helping us improve PBS Video.CloseCloseClose Learn More Down Bigger Than T. rex Meet Spinosaurus—the lost killer of the Cretaceous. Making North America: Life How did massive volcanic eruptions, inland seas, and land bridges pave the way for life? Drilling For the Dinosaurs' End A team drills into the crater made by the asteroid that may have wiped out the dinosaurs. Asteroid: Expert Q&A NASA's Don Yeomans answers questions about Apophis and the asteroid threat in general.Episode Links NOVA's "Day the Dinosaurs Died" Homepage Email Newsletter Shop NOVA
InteractiveNOVA's Black Holes AppIn this iPad app, navigate fields of cosmic objects in your quest to become a black hole.PlayPlay