Science & Spaceflight

8,355 topics in this forum

1. An 50 minutes video about the Rocketdyne Tripropellant engine

   By magnemoe, February 26
   • 10 replies
   • 464 views
   • 
   • Davi SDF
   • March 1

2. Speculating on the current conditions of defunct probes. 1 2

   By Minmus Taster, February 26
   • 27 replies
   • 563 views
   • 
   • magnemoe
   • March 1

3. Analyzing An Easy Peasy Method For First Contact With Low Orbit Tech Sapient Human-like Races...

   By Spacescifi, February 29
   • 23 replies
   • 456 views
   • 
   • kerbiloid
   • March 1

4. Scifi Question; If Rocket Thrust Could Be Inverted...

   By Spacescifi, February 29
   • 13 replies
   • 248 views
   • 
   • Spacescifi
   • March 1

5. NASA CLPS Program 1 2 3 4 7

   By tater, November 30, 2018
   • 174 replies
   • 8.4k views
   • 
   • tater
   • February 29

6. Off-planet manufacturing (split from SpaceX) 1 2 3 4

   By Elthy, May 30, 2021
   • 78 replies
   • 4k views
   • 
   • AckSed
   • February 28

7. How livable is Titan?

   By Minmus Taster, February 22
   • 15 replies
   • 486 views
   • 
   • kerbiloid
   • February 28

8. Whatever Happened To Wingless Electromagnetic Air Vehicles?

   By Spacescifi, April 22, 2020
   • 23 replies
   • 2k views
   • 
   • Nuke
   • February 28

9. How accurate is the KSP interstellar Alcubierre Drive? 1 2 3 4 5

   By SpaceLaunchSystem, November 18, 2014
   • 116 replies
   • 14.4k views
   • 
   • K^2
   • February 28

10. Mars Rover Perseverance Discussion Thread 1 2 3 4 25

    By cubinator, July 28, 2020
    • 620 replies
    • 40.5k views
    • 
    • grawl
    • February 26

11. Juno Arrival This Year! 1 2 3 4 7

    By KAL 9000, March 8, 2016
    • 169 replies
    • 16.9k views
    • 
    • Minmus Taster
    • February 26

12. Maximum Mass Of A Scifi SSTO Versus The Most Common Mass and Crew Complement...

    By Spacescifi, February 24
    • 6 replies
    • 162 views
    • 
    • KSK
    • February 26

13. What Could You Do With a 3 Yottaton Bomb?

    By Spacescifi, February 21
    • 15 replies
    • 382 views
    • 
    • KSK
    • February 23

14. Scifi Question: Is Governing An Interstellar Empire From The Past Feasible?

    By Spacescifi, February 19
    • 15 replies
    • 342 views
    • 
    • kerbiloid
    • February 23

15. If you had more payload capacity to the moon than you actually needed what would you take?

    By farmerben, February 19
    • 13 replies
    • 304 views
    • 
    • 55delta
    • February 22

16. Sierra Nevada Thread (Dream Chaser, plus!) 1 2 3 4 7

    By tater, October 1, 2018
    • 174 replies
    • 15.8k views
    • 
    • AckSed
    • February 21

17. The SETI Thread 1 2

    By Akagi, April 4, 2022
    • 26 replies
    • 890 views
    • 
    • farmerben
    • February 19

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

    By Megalodon 720, August 29, 2014
    • 5 replies
    • 6.4k views
    • 
    • JoeSchmuckatelli
    • February 19

19. Is SLS outdated or just right 1 2

    By Andrew1233, February 1
    • 33 replies
    • 1.1k views
    • 
    • darthgently
    • February 18

20. Any Modern Army That Could Actually Cope FIghting Against Superior Scifi Firepower?

    By Spacescifi, January 6
    • 24 replies
    • 514 views
    • 
    • farmerben
    • February 16

21. Surface transport for Martian volcanoes.

    By farmerben, February 10
    • 13 replies
    • 394 views
    • 
    • kerbiloid
    • February 12

22. Day length on Deimos

    By farmerben, February 11
    • 4 replies
    • 239 views
    • 
    • GluttonyReaper
    • February 12

23. X-37B 1 2 3 4 13

    By Kerbal01, May 7, 2017
    • 311 replies
    • 24.5k views
    • 
    • StrandedonEarth
    • February 10

24. Hyperloop 1 2 3 4

    By Spaceception, January 17, 2016
    • 75 replies
    • 5.8k views
    • 
    • magnemoe
    • February 10

25. totm oct 2023 NASA's OSIRIS-REx 1 2 3 4 18

    By archenemy_6, May 21, 2016
    • 438 replies
    • 36.3k views
    • 
    • StrandedonEarth
    • February 10