Science & Spaceflight

8,505 topics in this forum

1. Boom Supersonic

   By Royalswissarmyknife, January 3, 2024   

   • supersonic
   • passenger jet
   • (and 1 more)

      Tagged with:

     • supersonic
     • passenger jet
     • Boom Supersonic
   • 3 replies
   • 672 views
   • 
   • tater
   • February 10

2. 17 minutes.

   By boriz, February 8
   • 5 replies
   • 315 views
   • 
   • Nuke
   • February 8

3. What would Earth be like if Theia hadn't hit it?

   By Megalodon 720, August 29, 2014
   • 6 replies
   • 8.2k views
   • 
   • Jfjsharkattack
   • February 7

4. Could We Retrofit Nuclear Saltwater Rocket Technology To Be a Powerplant?

   By Spacescifi, February 4
   • 9 replies
   • 412 views
   • 
   • Nuke
   • February 7

5. The future of maritime propulsion 1 2 3

   By farmerben, October 7, 2024
   • 52 replies
   • 2.4k views
   • 
   • farmerben
   • February 6

6. What If a Humanoid Scifi Race Had Elephant Feet?

   By Spacescifi, February 5
   • 8 replies
   • 318 views
   • 
   • Jacke
   • February 6

7. Accelerator driven fission drive hybrid orion.

   By farmerben, February 3
   • 3 replies
   • 192 views
   • 
   • Nuke
   • February 5

8. Impulse Space

   By darthgently, November 14, 2024   

   • Tom Mueller
   • 2 replies
   • 338 views
   • 
   • darthgently
   • February 4

9. Philidelphia plane crash analysis help.

   By Arugela, February 1
   • 11 replies
   • 552 views
   • 
   • tater
   • February 3

10. Iranian Space Program (ISA) Thread

    By SunlitZelkova, December 6, 2023
    • 2 replies
    • 742 views
    • 
    • darthgently
    • February 3

11. Solar system formation? I've looked and I'm not satisfied the generally accepted explanation is satisfactory.

    By GeoffonTour, January 29
    • 10 replies
    • 618 views
    • 
    • Spacescifi
    • February 2

12. Theoretical Max Isp of a Nuclear Saltwater Rocket?

    By DareMightyThingsJPL, February 1   

    • nuclear
    • engine
    • (and 3 more)

       Tagged with:

      • nuclear
      • engine
      • isp
      • moarpowa
      • question
    • 4 replies
    • 268 views
    • 
    • DareMightyThingsJPL
    • February 2

13. Administrator Isaacman? 1 2 3

    By tater, December 4, 2024
    • 69 replies
    • 2.5k views
    • 
    • tater
    • January 31

14. Combustion LH2 with excess LO2 in pre-burner

    By EYAGGELOS TSICHLAS, January 30   

    • preburner
    • combustion
    • (and 1 more)

       Tagged with:

      • preburner
      • combustion
      • turbopump
    • 2 replies
    • 273 views
    • 
    • EYAGGELOS TSICHLAS
    • January 31

15. Nasa's new moon landing mission architecture is kind of insane.

    By JD_, January 30
    • 1 reply
    • 156 views
    • 
    • K^2
    • January 30

16. Agriculture on Mars 1 2

    By farmerben, January 15
    • 31 replies
    • 1.1k views
    • 
    • darthgently
    • January 30

17. I think I have a theory (hypothesis?) that would explain the double slit experiment and black holes. Please have a look if you're interested.

    By GeoffonTour, January 28
    • 14 replies
    • 589 views
    • 
    • Jacke
    • January 29

18. How large a space telescope do we need to see exo-civilizations? 1 2

    By Exoscientist, September 27, 2020   

    • exobiology
    • alien life
    • (and 2 more)

       Tagged with:

      • exobiology
      • alien life
      • space telescopes
      • exo-civilizations
    • 31 replies
    • 2.6k views
    • 
    • magnemoe
    • January 28

19. Quantum Physics discussion thread

    By 4472TJ, February 20, 2019   

    • physics
    • nerd haven
    • (and 2 more)

       Tagged with:

      • physics
      • nerd haven
      • theorys
      • quantum physics
    • 9 replies
    • 1.2k views
    • 
    • farmerben
    • January 26

20. Possibly My Final Rant On Scifi Hand Held Directed Energy Weapons...

    By Spacescifi, January 18
    • 8 replies
    • 523 views
    • 
    • magnemoe
    • January 26

21. The Analysis of Sea Levels. 1 2 3 4 41

    By mikegarrison, July 15, 2021
    • 1k replies
    • 62.2k views
    • 
    • darthgently
    • January 20

22. How NASA funding works

    By darthgently, January 19   

    • Eager Space
    • NASA
    • 5 replies
    • 309 views
    • 
    • tater
    • January 19

23. Fess up - who's junk is this? 1 2

    By JoeSchmuckatelli, January 3
    • 31 replies
    • 1.4k views
    • 
    • magnemoe
    • January 17

24. Scifi Scenario... How Ubiquitous Would Bomb Energy Dense Batteries Be For Practical and Safety Reasons?

    By Spacescifi, January 13
    • 6 replies
    • 419 views
    • 
    • Spacescifi
    • January 16

25. Rocket Factory Augsburg 1 2

    By tater, August 31, 2021
    • 42 replies
    • 5.1k views
    • 
    • AckSed
    • January 16