Science & Spaceflight

8,478 topics in this forum

1. totm may 2024 Mars Sample Return discussion thread 1 2 3

   By Minmus Taster, November 20, 2022
   • 50 replies
   • 3.4k views
   • 
   • SunlitZelkova
   • February 14

2. ULA launch and discussion thread 1 2 3 4 68

   By tater, September 21, 2017   

   • delta
   • atlas
   • (and 1 more)

      Tagged with:

     • delta
     • atlas
     • ula
   • 1.7k replies
   • 141k views
   • 
   • tater
   • February 13

3. totm jan 2025 Optimal size for domes and other structures 1 2 3 4 6

   By farmerben, December 16, 2024
   • 140 replies
   • 4.3k views
   • 
   • magnemoe
   • February 11

4. Boom Supersonic

   By Royalswissarmyknife, January 3, 2024   

   • supersonic
   • passenger jet
   • (and 1 more)

      Tagged with:

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

5. [New] Space Launch System / Orion Discussion Thread 1 2 3 4 134

   By ZooNamedGames, July 21, 2019
   • 3.3k replies
   • 252.8k views
   • 
   • darthgently
   • February 10

6. European Space Agency (ESA) Thread 1 2

   By RCgothic, November 7, 2023
   • 34 replies
   • 2.3k views
   • 
   • AckSed
   • February 8

7. 17 minutes.

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

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

   By Megalodon 720, August 29, 2014
   • 6 replies
   • 7.9k views
   • 
   • Jfjsharkattack
   • February 7

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

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

10. The future of maritime propulsion 1 2 3

    By farmerben, October 7, 2024
    • 52 replies
    • 2k views
    • 
    • farmerben
    • February 6

11. Boeing's Starliner 1 2 3 4 57

    By Kryten, September 2, 2015
    • 1.4k replies
    • 110.9k views
    • 
    • tater
    • February 6

12. totm dec 2019 Russian Launch and Mission Thread 1 2 3 4 193

    By tater, September 11, 2017   

    • ils
    • proton
    • (and 2 more)

       Tagged with:

      • ils
      • proton
      • soyuz
      • roscosmos
    • 4.8k replies
    • 332.5k views
    • 
    • DDE
    • February 6

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

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

14. Accelerator driven fission drive hybrid orion.

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

15. Impulse Space

    By darthgently, November 14, 2024   

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

16. ISRO Discussion Thread 1 2 3 4 17

    By TheEpicSquared, June 4, 2017   

    • isro
    • 420 replies
    • 40.9k views
    • 
    • AckSed
    • February 3

17. Philidelphia plane crash analysis help.

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

18. Iranian Space Program (ISA) Thread

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

19. JAXA (& other Japanese) Launch and Discussion Thread 1 2 3 4 15

    By tater, August 19, 2017
    • 353 replies
    • 34.4k views
    • 
    • tater
    • February 2

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

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

21. 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
    • 218 views
    • 
    • DareMightyThingsJPL
    • February 2

22. Administrator Isaacman? 1 2 3

    By tater, December 4, 2024
    • 69 replies
    • 2.2k views
    • 
    • tater
    • January 31

23. 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
    • 226 views
    • 
    • EYAGGELOS TSICHLAS
    • January 31

24. OSIRIS-REx Asteroid Sample Return 1 2 3 4 30

    By IonStorm, March 29, 2016   

    • nasa
    • osiris-rex
    • 736 replies
    • 102k views
    • 
    • Vanamonde
    • January 30

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

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