What If Apophis Actually Hits Earth?

#Apophis #Asteroid #SpaceScience What if asteroid Apophis had hit Earth? 🌍 In December 2004, astronomers found that a newly rediscovered asteroid had about a 1-in-40 chance of hitting Earth in 2029. This video follows how the scare began, how archived photographs ruled out 2029, what a "gravitational keyhole" is, and how scientists map a risk corridor across the planet. It then looks at the energy a rock about 340 meters wide could release, what the landscape underneath would change, and how Apophis was finally cleared. In April 2029 it will pass closer than our geostationary satellites. Discover: • How 2004 MN4 became the highest-rated asteroid threat on the Torino scale • How archived photos from March 2004 changed the prediction • What a gravitational keyhole is, and why 2036 was once a worry • Why scientists draw a risk corridor and not a single landing spot • How Apophis compares with Tunguska, Krakatoa and Tsar Bomba • Why an ocean impact and a land impact are different • What the 2021 planetary defense exercise taught us • What the Ramses and OSIRIS-APEX missions will study in 2029 Timestamps 00:00 – The Asteroid With a One-in-Forty Chance 00:49 – The Rock That Went Missing 02:04 – The Photographs That Changed Everything 02:54 – The Keyhole 04:30 – What a 340-Metre Rock Would Release 06:24 – Ocean, Mountain or City? 08:09 – How Apophis Was Finally Cleared 08:51 – Friday, April 13, 2029 💬 If you had been in that room in December 2004, would you have told the public immediately, or waited for more data? Tell us in the comments. Apophis poses no impact risk for at least the next 100 years, according to NASA and ESA. This video explores a past scenario that was ruled out, using published estimates. Impact effects are uncertain and depend on many factors. #PlanetaryDefense #NASA #ESA #Asteroids #SpaceDocumentary