Science & Spaceflight

8,461 topics in this forum

1. Plants on planets around red dwarves

   By Space Nerd, May 3, 2020
   • 12 replies
   • 977 views
   • 
   • K^2
   • May 4, 2020

2. Study Suggests Fundamental Laws of Nature Change Throughout the Universe

   By FreeThinker, May 3, 2020
   • 8 replies
   • 687 views
   • 
   • kerbiloid
   • May 4, 2020

3. I have a feeling covid-19 sets the moon landing back.

   By harrisjosh2711, April 30, 2020
   • 21 replies
   • 1.1k views
   • 
   • tater
   • May 1, 2020

4. SSTO Challenges Of Weight and landing gear

   By Spacescifi, April 29, 2020
   • 7 replies
   • 777 views
   • 
   • Spacescifi
   • May 1, 2020

5. A great JPL talk about Cassini's Saturn discoveries

   By Cunjo Carl, May 1, 2020
   • 1 reply
   • 588 views
   • 
   • Spaceception
   • May 1, 2020

6. Is it possible to create Saturn V(esqe) rocket but with entirely modern/newer technology? What its performance will be like? 1 2 3

   By derega16, April 21, 2020
   • 69 replies
   • 3.9k views
   • 
   • mikegarrison
   • May 1, 2020

7. Hack a Sat CHALLENGE

   By RoninFrog, April 27, 2020
   • 2 replies
   • 462 views
   • 
   • JoeSchmuckatelli
   • April 30, 2020

8. Parachute For Reentry

   By Spacescifi, April 28, 2020
   • 20 replies
   • 1.4k views
   • 
   • kerbiloid
   • April 30, 2020

9. So You Want 1g Constant Acceleration? 1 2

   By Spacescifi, April 17, 2020
   • 32 replies
   • 4k views
   • 
   • Nuke
   • April 28, 2020

10. Iranian Space Agency discussion thread

    By DDE, January 16, 2019   

    • iran
    • not nukes
    • 13 replies
    • 1.2k views
    • 
    • Scotius
    • April 27, 2020

11. Odd aerial phenomenom

    By SunhillJ, April 27, 2020
    • 4 replies
    • 486 views
    • 
    • cubinator
    • April 27, 2020

12. Antimatter Bombs VS Nuclear Bombs For Project Orion 1 2

    By Spacescifi, December 16, 2019
    • 37 replies
    • 4.1k views
    • 
    • SOXBLOX
    • April 27, 2020

13. Building Starfleet The Hard Way 1 2

    By Spacescifi, February 26, 2020
    • 45 replies
    • 2.7k views
    • 
    • SOXBLOX
    • April 27, 2020

14. Cool new lunar map - is there any significance to the number / placement of Copernican Craters?

    By JoeSchmuckatelli, April 24, 2020
    • 13 replies
    • 697 views
    • 
    • kerbiloid
    • April 26, 2020

15. Finding max separation of planets 1 2

    By Syntax, November 20, 2018   

    • calculations
    • separation
    • (and 1 more)

       Tagged with:

      • calculations
      • separation
      • distance
    • 29 replies
    • 3.1k views
    • 
    • Syntax
    • April 26, 2020

16. Intakes For Descent... Viable?

    By Spacescifi, April 21, 2020
    • 9 replies
    • 657 views
    • 
    • kerbiloid
    • April 25, 2020

17. Best Spaceship We Could Build Now 1 2 3

    By Spacescifi, April 6, 2020
    • 51 replies
    • 3.3k views
    • 
    • SOXBLOX
    • April 25, 2020

18. The Helium Bleed Cycle

    By Cunjo Carl, April 6, 2020
    • 24 replies
    • 2k views
    • 
    • Cunjo Carl
    • April 24, 2020

19. Maglev hyper tunnels

    By farmerben, April 23, 2020
    • 2 replies
    • 409 views
    • 
    • Nuke
    • April 23, 2020

20. Thorium dioxide spacecraft hulls with nickel or silicon

    By farmerben, April 23, 2020
    • 2 replies
    • 428 views
    • 
    • kerbiloid
    • April 23, 2020

21. Question about flying up to a satalite in geosynchronous orbit

    By xendelaar, April 22, 2020
    • 19 replies
    • 1k views
    • 
    • xendelaar
    • April 23, 2020

22. Self Sustaining Space Habitats... What Does It Take?

    By Spacescifi, April 22, 2020
    • 9 replies
    • 596 views
    • 
    • kerbiloid
    • April 23, 2020

23. Using side thruster on missiles to create an angular acceleration 1 2

    By sahil saxena, March 31, 2020   

    • rocket
    • thrust
    • (and 2 more)

       Tagged with:

      • rocket
      • thrust
      • propulsion
      • aerodynamic
    • 46 replies
    • 4.2k views
    • 
    • sahil saxena
    • April 22, 2020

24. Exoplanet assumptions...

    By micha, April 21, 2020
    • 11 replies
    • 846 views
    • 
    • kerbiloid
    • April 22, 2020

25. Real Space Crew Dynamics Versus Scifi

    By Spacescifi, April 14, 2020
    • 13 replies
    • 977 views
    • 
    • kerbiloid
    • April 21, 2020