Why We Should Launch Rockets From the Moon

509,660
0
Published 2019-12-30
PBS Member Stations rely on viewers like you. To support your local station, go to: to.pbs.org/DonateOKAY
↓ More info and sources below ↓

Thanks to Brilliant for supporting PBS. Learn more at: brilliant.org/BeSmart

We’re on PATREON now! Join the community ►► www.patreon.com/itsokaytobesmart

SUBSCRIBE so you don’t miss a video! ►► bit.ly/iotbs_sub

Half a century ago, astronauts got on top of a really big rocket and sent a tiny little capsule on a 384,000 km trip to the moon and back. And they were able to do it because a lot of extremely smart and dedicated people pushed engineering and chemistry to the limits in order to create a 36-story tower of carefully-controlled space fire powerful enough to escape Earth’s gravity. I went to NASA in Houston to talk to astronaut Don Pettit about how they did it, and if we’ll be able to do it again.

Special thanks to Don Pettit and NASA

Special thanks to our Brain Trust Patrons:
AlecZero
Bob Rosset
Brent M.
Diego Lombeida
Ron Kakar

-----------
Join us on Patreon!
patreon.com/itsokaytobesmart

Twitter
www.twitter.com/DrJoeHanson
www.twitter.com/okaytobesmart

Instagram
www.instagram.com/DrJoeHanson
www.instagram.com/okaytobesmart

Merch
store.dftba.com/collections/i...

Facebook
www.facebook.com/itsokaytobesmartpbs/

All Comments (21)
  • @besmart
    Launching big tubes of space fire is hard. I’m grateful to my favorite astronaut Don Pettit for explaining the physics of the rocket equation to me in simple terms that my biologist brain could handle 🤓
  • @baijokull
    "I was told there would be no math" Well, this is literally rocket science...
  • @SeppsX
    That comment just struck me: "it takes three to five days to get to the moon." Just nonchalant 3-5 days. Imagine telling that to Columbus.
  • @NewMessage
    That one missing tail section on that dinosaur model is gonna bug me all day.
  • @maryv5815
    "The sky is not the limit!" I like that.
  • @ComicDrake
    As a Texan, I love how you're clearly at a Buc-ee's when filling up your car.
  • @XIII_Vanitas
    Get yourself a partner that looks at you the way Joe looks at Don.
  • @ThomasAlex
    Kids, the sky is not the limit . . But Gravity Is Paraphrased from Joe Hansen
  • @thebrainscoop
    I can't handle the amount of freakin mIND-BLOWING INFORMATION IN THIS VIDEO !!!!! JOE, HECK
  • @HomebaseLHR
    “We’re already pretty good at engineering planes” meanwhile at Boeing ...
  • @fourducks
    "We've been to space! I can't even believe we have to do this!" I can't stop laughing...because science! I want a D.A.F.E. shirt. LOL 🤣🤣🤣🤣 (Edited for misquote)
  • @khrdina
    The bit starting at 0:38 was not entirely accurate. Joe points only to the CM (Command Module), but the CM, the SM (Service Module), and the LM (Lunar Module) all went to the moon. The CM and SM came back to earth (as did the LM ascent module for Apollo XIII). The SMs for every Apollo mission all returned to earth and burned up during re-entry. The graphic at 3:48 shows all these parts as part of the "1%", though.
  • @KFordmusic
    I’m so Texan I could tell he was at a Bucee’s just from that clip
  • @ALPHONSE2501
    To deeper your rocket knowledge, you can go to Everyday Astronaut and Scott Manley's channel.
  • @watermelonhead.
    I love how Joe told us to not get scared by a mathematical equation. I wish my physics teacher can do that too.
  • You heard it here first, folks. The 1% depends entirely on the work of the 99% to get anywhere.
  • @cheiann4652
    "I was told there would be no math." -me entering Psychology
  • @wolfrig2000
    Can't we just sacrifice some Kerbals and wing it?
  • I think everyone keeps forgetting that this needs an industrial scale energy and resource infrastructure built on the freaking moon...
  • @spiritstrife
    My first thought after watching this was: If the Earth was 10%-15% larger we couldn't have a space program, does that mean if the Moon wasn't knocked off of Earth by that meteor we would be too large for space travel? I suppose even if we weren't too large not having a moon would cause loads of other issues, but that was my first thought.