Science & Spaceflight

8,357 topics in this forum

1. How Common Or Rare Are Planets with 1g or Greater?

   By Spacescifi, September 20, 2023
   • 15 replies
   • 532 views
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   • Shpaget
   • September 21, 2023

2. Breakthrough Starshot Mission thread

   By farmerben, September 17, 2023
   • 7 replies
   • 360 views
   • 
   • NFUN
   • September 19, 2023

3. Historic Battle of Midway wrecks surveyed

   By Minmus Taster, September 16, 2023
   • 21 replies
   • 1k views
   • 
   • magnemoe
   • December 5, 2023

4. Scifi Fun With Inertial Negators....

   By Spacescifi, September 15, 2023
   • 12 replies
   • 558 views
   • 
   • KSK
   • September 19, 2023

5. Possible signs of possible ET Life.

   By Gargamel, September 12, 2023
   • 20 replies
   • 714 views
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   • darthgently
   • December 17, 2023

6. Could a Falcon 9 with single seat cabin and no 2nd stage...

   By darthgently, September 12, 2023
   • 15 replies
   • 378 views
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   • Hannu2
   • September 13, 2023

7. A Kardeshev III civilization would head for the Virgo Supercluster

   By farmerben, September 10, 2023
   • 12 replies
   • 572 views
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   • kerbiloid
   • September 12, 2023

8. Flying carrier!!! Found a solution!

   By Arugela, September 10, 2023
   • 9 replies
   • 616 views
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   • magnemoe
   • September 11, 2023

9. Why Thermal Combustion Rockets On Par With Chemical Or Solid Rocket Thrust Will Be Fiction For An Indefinite Time...

   By Spacescifi, September 10, 2023
   • 15 replies
   • 555 views
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   • magnemoe
   • September 24, 2023

10. Night solar panel drones? 24 hour operation?!

    By Arugela, September 7, 2023
    • 10 replies
    • 536 views
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    • kerbiloid
    • September 9, 2023

11. Which velocity formula is more accurate?

    By Arugela, September 5, 2023
    • 14 replies
    • 518 views
    • 
    • Arugela
    • September 7, 2023

12. Minuteman III test tonight

    By darthgently, September 5, 2023
    • 11 replies
    • 478 views
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    • DDE
    • September 9, 2023

13. Gliese 710 will fly approximately 1 light year from our sun a million years from now

    By farmerben, September 5, 2023
    • 11 replies
    • 361 views
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    • mikegarrison
    • September 7, 2023

14. Hybrid ram/scram/rocket?

    By Arugela, September 2, 2023
    • 1 reply
    • 356 views
    • 
    • Starwaster
    • September 14, 2023

15. Questions About Rocket Nozzles...

    By Spacescifi, August 31, 2023
    • 4 replies
    • 286 views
    • 
    • darthgently
    • September 2, 2023

16. If Superman Was Powered By Electricity Instead Of The Sun How Much Electricity Would He Need?

    By Spacescifi, August 27, 2023
    • 7 replies
    • 487 views
    • 
    • Arugela
    • September 2, 2023

17. If We Had Atomic Colliders That Were Reliably Efficient... What Could We Do?

    By Spacescifi, August 25, 2023
    • 14 replies
    • 489 views
    • 
    • Arugela
    • September 2, 2023

18. India is "The Mouse on the moon"

    By Space_Coyote, August 24, 2023
    • 14 replies
    • 566 views
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    • magnemoe
    • August 28, 2023

19. Crazy Cyborg Skeleton Overlaid With A Human Body... Pros and Cons?

    By Spacescifi, August 22, 2023
    • 15 replies
    • 586 views
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    • kerbiloid
    • August 24, 2023

20. Just a little tweak of the Extremely Large Telescope(ELT)

    By Exoscientist, August 22, 2023
    • 20 replies
    • 1k views
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    • darthgently
    • October 11, 2023

21. Can i get to Laythe with 3.7km/s DV from Mun surface?

    By XGCZ, August 21, 2023
    • 2 replies
    • 286 views
    • 
    • magnemoe
    • August 21, 2023

22. Tonight's Random Math Question

    By JoeSchmuckatelli, August 20, 2023
    • 6 replies
    • 258 views
    • 
    • RCgothic
    • August 21, 2023

23. Centrifugal Plasma Accelerator Pulse Rocket Idea....

    By Spacescifi, August 19, 2023
    • 10 replies
    • 522 views
    • 
    • farmerben
    • August 20, 2023

24. What would a LF2 (Liquid Fluorine) exhaust plume look like?

    By KeaKaka, August 18, 2023
    • 15 replies
    • 446 views
    • 
    • kerbiloid
    • August 21, 2023

25. Mechanical Scifi Fusion.... Could We Do It?

    By Spacescifi, August 17, 2023
    • 20 replies
    • 574 views
    • 
    • kerbiloid
    • August 18, 2023