How to Win an Interstellar War

6,907,732
3,057
Published 2023-11-15
Check out some of our favorite shop products here: kgs.link/shop Our shop is not only our most important source of income, but our passion project where we create sciencey products with of lot of love and detail.

Sources & further reading: sites.google.com/view/sources-interstellarwar/

Could aliens destroy us from light years away? Another day at Kurzgesagt Labs, where we answer the most important questions with science.
Today: how might civilizations wage war across light years? What kind of devastating weapons could they use and what would they look like?

OUR CHANNELS
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
German: kgs.link/youtubeDE
Spanish: kgs.link/youtubeES
French: kgs.link/youtubeFR
Portuguese: kgs.link/youtubePT
Arabic: kgs.link/youtubeAR
Hindi: kgs.link/youtubeHI
Japanese: kgs.link/youtubeJA
Korean: kgs.link/youtubeKO


HOW CAN YOU SUPPORT US?
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
This is how we make our living and it would be a pleasure if you support us!

Get Products designed with ❤ shop-us.kurzgesagt.org
Join the Patreon Bird Army 🐧 kgs.link/patreon


DISCUSSIONS & SOCIAL MEDIA
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
TikTok: kgs.link/tiktok
Reddit: kgs.link/reddit
Instagram: kgs.link/instagram
Twitter: kgs.link/twitter
Facebook: kgs.link/facebook
Discord: kgs.link/discord
Newsletter: kgs.link/newsletter


OUR VOICE
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
The Kurzgesagt voice is from
Steve Taylor: kgs.link/youtube-voice


OUR MUSIC ♬♪
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
700+ minutes of Kurzgesagt Soundtracks by Epic Mountain:

Spotify: kgs.link/music-spotify
Soundcloud: kgs.link/music-soundcloud
Bandcamp: kgs.link/music-bandcamp
Youtube: kgs.link/music-youtube
Facebook: kgs.link/music-facebook

The Soundtrack of this video:
SoundCloud: bit.ly/3SGtmFE
Bandcamp: bit.ly/40Gsseq

If you want to help us caption this video, please send subtitles to [email protected]
You can find info on what subtitle files work on YouTube here:
support.google.com/youtube/answer/2734698?hl=en-GB…
Thank you!

🐦🐧🐤 PATREON BIRD ARMY 🐤🐧🐦
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
Many Thanks to our wonderful Patreons (from kgs.link/patreon) who support us every month and made this video possible:
robek, Brad Christensen, Asija Newns, Pedro Castro Verdezoto, Lucas Watkins, damien perolle, Fab Cars, alomanola, MikyF2K, Mithilesh Hinge, okor, Lucan, The Gnome, Kyung Geun Kim, Misa Brass, Martin Hippenstiel, Morgan, Anthony Distel, Filip Rogowski, Gabe, Tobias Hofmann, Zaret, Bootools, David Earl, Ben Hamilton, still [Redacted], polyploidy, Elgenzay, Jared, Soda celeste, Felix, Benjamin Goodrich, Taher Rangwala, Jesse Barnes, WillowTree, DarkKot 686, Aaron Phillips, Luc Royal, Lukas Meier, esamoth, Smithius, Mermor, Laura Kühne, Tyler Fendone, gassi30, Andres Arce, Suzanne frounfelter, Akito Nozaki, SirRender, Space, Daniel Hofmeister, Dan M, Jacob Culp, ReyesX77, Aaron T Haltman, DJ Dubbes, SchnarcheNoah, Keira Standing, Steven Lamontagne, Bliss, David Anderson, Uhh Uhhh Uhhh, The Paul

All Comments (21)
  • @kurzgesagt
    ✨ Join the Galactic Club: your cozy corner in the vast universe ✨ shop.kgs.link/galactic-club Get everything you need to fit right in with our brand new Limited Drop – available worldwide, and ONLY on the kurzgesagt shop! Stocks are highly limited, so don’t delay!
  • @paubuigues4363
    Thank you Kurzgesagt, I was planning to wage an interstellar war soon, this will surely be helpful
  • I love how instead of deciding to help humanity build the weapon, kurzgesagt instead decided to help the aliens
  • @davisadolphin618
    "planning a hyper-space bypass through our solar system" I see a Hitch-Hikers Guide To The Galaxy reference, and I like it!
  • @bobhawke7373
    The three body problem is the greatest series of novels I have ever read to do with alien invasion. Read this series and instantly double your perceived imagination of space. It's that mind blowing. I highly recommend it.
  • @flibber123
    If the aliens sent a message like "Surrender within 24 hours or face destruction" we could send a message back "Is that 24 hours in your time or our time?". Considering the distance involved, we could gain millions of years of extra time just by trying to sort that out.
  • @CryptoNWO
    If you sent a pebble fast enough you’d be able to destroy an entire planet
  • @treekus24
    “The bigger it is, the longer its range.” Didn’t think I would be able to take a kurzgesagt audio bit out of context.
  • @genius31415
    Imagine waiting 84 years just to hear that your intergalactic weapon hit a random planet that was in the way.
  • So fascinating to learn that humanity is completely defenseless to advanced hostile aliens in at least three different ways!
  • @EeveeMaster547
    Absolutely loving how with the Electron Beam you can hear the narrator carefully counting each '9'
  • @Sabz1679
    Love how you's went full "3 Body Problem" in this video 👌🏽
  • @TimeBucks
    This would honestly be such a great idea for a show
  • @JasoTheRed48F2
    An interesting follow up video would be how a more advanced humanity might defend against such existential weapons.
  • @Silverdenn
    I love that I've grown up to Steve Taylor. He has such a calming, yet captivating voice!
  • @Rechnerstrom
    Lesson 1: don't attack from your home base. Use another star as your attack base. If anyone retaliates, they attack right into your honeypot, revealing themselves. Welcome to interstellar war. Interstellar assassination with rockets: You don't have to go relativistic from your home base. Use light sails at the outskirts of your home star's corona to accelerate to 0.1c and go for a somewhat nearby white dwarf (not too near). Use the flight time to assemble the rockets underway. This should be possible totally unseen and costs just a couple of years more. That's totally unimportant since nobody knows about you anyway. At the white dwarf use an Obert maneuver going relativistic. The direction of attack is changed because of the gravity of the white dwarf (that's one of the reason's for the Obert maneuver, the other is the masking of the drive's radiation), masking the true origin of the attack and since the Obert maneuver is happening very near to the surface of the white dwarf everybody thinks this is a normal astronomical event on the surface of the white dwarf. You don't have a cooling problem because of the vicinity of the white dwarf since you have the technology to cool your rocket from the immense radiation of your drive which should be very much higher than the radiation coming from the white dwarf, so that's not a problem. If necessary you could even fake a real astronomical event using your antimatter. Nothing points to your home base. If anyone figures out anything it should be clear to them that the home base couldn't be have been the white dwarf and they remain silent.
  • @georgeashley6643
    After finishing ‘The Dark Forest’ by Cixin Liu, every science video suddenly feels different. I’m seeing the universe in a way I never did before.