Science & Spaceflight

8,461 topics in this forum

1. Two Questions

   By Spacescifi, April 19, 2020
   • 9 replies
   • 824 views
   • 
   • Guest
   • April 20, 2020

2. Rocket Plumes In Space Versus Scifi

   By Spacescifi, April 14, 2020
   • 10 replies
   • 1.6k views
   • 
   • Guest
   • April 20, 2020

3. Can Nuclear Rockets Ever Compete With Chemical For Thrust?

   By Spacescifi, April 18, 2020
   • 10 replies
   • 974 views
   • 
   • Guest
   • April 19, 2020

4. Pros And Cons Of Mining Saturn's Rings

   By Spacescifi, April 16, 2020
   • 15 replies
   • 1.6k views
   • 
   • Nuke
   • April 18, 2020

5. Lunar Crater Radio Telescope - LCRT

   By Shpaget, April 15, 2020
   • 12 replies
   • 1.3k views
   • 
   • Nuke
   • April 17, 2020

6. Quick Question(?) Orbit around a Stellar Mass Black Hole

   By JoeSchmuckatelli, April 13, 2020
   • 19 replies
   • 1.2k views
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   • kerbiloid
   • April 16, 2020

7. Most enviromentally friendly Propellant choices 1 2

   By Spacescifi, April 10, 2020
   • 30 replies
   • 2k views
   • 
   • farmerben
   • April 15, 2020

8. Aerospiked recoiless rifle

   By farmerben, April 13, 2020
   • 2 replies
   • 417 views
   • 
   • farmerben
   • April 13, 2020

9. Battle Of The Scifi Drives

   By Spacescifi, April 13, 2020
   • 1 reply
   • 367 views
   • 
   • kerbiloid
   • April 13, 2020

10. Out of Control Candle 1 2 3

    By Starwhip, July 18, 2015
    • 71 replies
    • 10.4k views
    • 
    • RCgothic
    • April 12, 2020

11. The Space Review: "Why a business case for Mars settlement is not required" 1 2 3

    By DDE, April 8, 2020   

    • thespacereview
    • 50 replies
    • 2.7k views
    • 
    • DDE
    • April 10, 2020

12. Something I struggle with: orbital orientation

    By JoeSchmuckatelli, March 24, 2020
    • 21 replies
    • 1.3k views
    • 
    • JoeSchmuckatelli
    • April 10, 2020

13. Do You Think There Are Planets Around Alpha Centauri?

    By caballerodiez, April 9, 2020
    • 6 replies
    • 810 views
    • 
    • wafflemoder
    • April 10, 2020

14. The Many Applications Of Antimatter

    By Spacescifi, April 9, 2020
    • 11 replies
    • 990 views
    • 
    • wafflemoder
    • April 10, 2020

15. did dark matter eat all the antiquarks?

    By Nuke, March 27, 2020
    • 17 replies
    • 1.5k views
    • 
    • farmerben
    • April 8, 2020

16. How Far Will A Pusher Plate Take You? 1 2

    By Spacescifi, March 25, 2020
    • 27 replies
    • 1.9k views
    • 
    • Bill Phil
    • April 8, 2020

17. Carbon Dioxide RCS

    By Misguided Kerbal, April 8, 2020   

    • rcs
    • future
    • 7 replies
    • 951 views
    • 
    • DDE
    • April 8, 2020

18. C/2019 Y4 (ATLAS) might become a naked-eye comet 1 2

    By ProtoJeb21, March 28, 2020
    • 25 replies
    • 2.2k views
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    • ProtoJeb21
    • April 7, 2020

19. Event Horizon Telescope published its findings on 3C 279

    By Delay, April 7, 2020
    • 0 replies
    • 353 views
    • 
    • Delay
    • April 7, 2020

20. Magnetically increased Thrust For Lightcraft?

    By Spacescifi, April 6, 2020
    • 4 replies
    • 539 views
    • 
    • magnemoe
    • April 6, 2020

21. explanations for the oberth effect

    By jevry, April 2, 2020   

    • question
    • 11 replies
    • 989 views
    • 
    • magnemoe
    • April 6, 2020

22. A Combined Approach Better Than SSTO's?

    By Spacescifi, April 4, 2020
    • 19 replies
    • 1.3k views
    • 
    • Selective Genius
    • April 6, 2020

23. Alternate Nuke Pusher Plate Shapes? 1 2

    By Spacescifi, March 17, 2020
    • 40 replies
    • 2.7k views
    • 
    • farmerben
    • April 2, 2020

24. Quebec sure does have a lot of wierd circles...

    By Pds314, February 29, 2020
    • 15 replies
    • 1.5k views
    • 
    • farmerben
    • April 2, 2020

25. Lithium+Fluorine+Hydrogen, why not? 1 2

    By RuBisCO, March 28, 2020
    • 33 replies
    • 4.6k views
    • 
    • p1t1o
    • April 1, 2020