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Space Exploration

Notable Question

 Notable Question
Question with 2,500 views. This badge can be awarded multiple times.
Awarded 2984 times.
How cheap would rocket fuel have to be to make Mars colonization feasible (according to Musk)?
Awarded 17 mins ago
Has anyone returned from space in a different vehicle from the one they went up in? And if so who was the first?
Awarded 2 hours ago
How to convert from tons to kilonewtons?
Awarded 22 hours ago
How do astronauts and cosmonauts sleep on a Soyuz?
Awarded yesterday
Cosmic rays can be new energy source [closed]
Awarded yesterday
What other marketable uses are there for Starship if Mars colonization falls through?
Awarded Sep 6 at 8:07
How would humans actually colonize Mars? [closed]
Awarded Sep 5 at 12:41
If Starliner returns safely on autopilot, can this still prove that it's safe? Could it be launched back up to the ISS again to complete its mission?
Awarded Sep 2 at 20:34
How much acceleration g-force can prevent pilot from moving their arms?
Awarded Sep 2 at 10:02
How fast do they spin astronauts these days? Maximum routine g-training for astronauts in the 21st century?
Awarded Aug 31 at 9:06
Will this be the first time that there are more people aboad the ISS than seats in docked spacecraft?
Awarded Aug 27 at 12:55
Why, if gravity were higher, would designing a fully reusable rocket be impossible?
Awarded Aug 27 at 0:25
What is the amount of Delta-V required to enter lunar orbit following Trans-Lunar Injection?
Awarded Aug 26 at 19:16
If Crew Dragon can dock autonomously, why is there a crew aboard when they change from docking port to another?
Awarded Aug 26 at 9:01
Vector-R's LP-1 and -2 engines use liquid propylene as fuel with LOX, advantages and distinctions from kerosene or propane?
Awarded Aug 23 at 18:36
How can flyby missions work?
Awarded Aug 22 at 14:05
If the Van Allen Radiation Belt reaches temperatures of 35,000C, How is it possible to go through them when the craft has a boiling point of 4000C? [closed]
Awarded Aug 22 at 4:26
Has any spacecraft ever been severely damaged by a micrometeorite?
Awarded Aug 21 at 15:42
Did anyone ever ask Neil Armstrong whether he said "for man" or "for a man?"
Awarded Aug 20 at 23:03
Where exactly was this picture of a huge solar eruption taken?
Awarded Aug 19 at 18:42
What if something goes wrong during the seven minutes of terror?
Awarded Aug 19 at 16:55
Why are uncertainties of orbital state vectors provided as covariance matrixes?
Awarded Aug 19 at 12:19
Do astronauts qualify to be calculated for hazardous duty in their pay?
Awarded Aug 17 at 7:30
Did the Space Shuttle weigh itself before deorbit?
Awarded Aug 16 at 21:35
Do space stations have anything that big spacecraft (such as the Space Shuttle and SpaceX Starship) don't have?
Awarded Aug 15 at 14:27
Would capture of a uranium-rich asteroid open new possibilities?
Awarded Aug 13 at 14:47
Is there a reason SpaceX does not spiral weld Starship rocket bodies?
Awarded Aug 13 at 2:26
Is the Hubble's orbit larger than that of the moon?
Awarded Aug 11 at 20:41
How does one "dump" or deplete propellant without changing spacecraft attitude or trajectory?
Awarded Aug 7 at 4:57
Feynman famously criticized the Space Shuttle program for not delivering any value to science. Did things improve in that regard since the 1980s?
Awarded Aug 6 at 20:11
Generating TLEs with STK Using SGP4 Propagator;
Awarded Aug 5 at 12:21
Is there a maximum ISp?
Awarded Aug 3 at 17:46
Why is the bend angle of a hyperbolic trajectory giving different results?
Awarded Aug 1 at 22:35
How to tell a satellite is tumbling and out of control?
Awarded Jul 31 at 21:41
Could the sun be used as a super-amplifier for SETI transmissions? [closed]
Awarded Jul 27 at 19:03
How were Wikipedia's orbital simulations made?
Awarded Jul 23 at 18:34
Is retired astronaut Scott Kelly now the same height as his brother?
Awarded Jul 19 at 13:32
How can gravity gradient forces be calculated?
Awarded Jul 18 at 4:40
How does one determine the optimal CH4:O2 ratio in a methane-LOX rocket engine?
Awarded Jul 17 at 22:56
How do cables and cooling lines transverse the pressure hull of the International Space Station?
Awarded Jul 17 at 14:10
How did the kerosene-burning Black Arrow have transparent exhaust? (seems to just "hover" in photos)
Awarded Jul 16 at 12:46
Amount of fuel for accelerating a spaceship
Awarded Jul 13 at 23:21
What will happen to Parker Solar Probe in the long term?
Awarded Jul 10 at 22:52
How does Spinlaunch manage the counterweight right after launch?
Awarded Jul 9 at 13:15
How can I calculate if a satellite is currently in sunlight or eclipse using pyEphem or Skyfield (preferred)?
Awarded Jul 9 at 12:15
What's the point of Dream Chaser?
Awarded Jul 2 at 21:05
S-I, S-II, S-IV; what happened to III?
Awarded Jun 30 at 10:13
How will the ISS be decommissioned?
Awarded Jun 29 at 9:41
Could Kessler Syndrome be used to control the temperature of the Earth?
Awarded Jun 27 at 20:51
What aspects of reentry heating 'scale as the 8th power'?
Awarded Jun 25 at 6:25
How do you determine what the temperature will be in the combustion chamber of a rocket engine?
Awarded Jun 22 at 17:18
What are the two bright objects separating from the Falcon 9?
Awarded Jun 19 at 18:17
Are Martian winds as strong as portrayed in "The Martian"?
Awarded Jun 18 at 15:35
Calculating the delta V budget from Earth to Mercury
Awarded Jun 17 at 11:48
What is the analytical closed-form solution of the two-body problem to verify its numerical integration results?
Awarded Jun 17 at 10:40
What is the goal of the message “astronaut use only” written on one Hubble's module?
Awarded Jun 17 at 7:12
Accuracy of converting from TLE/Orbital Elements to Cartesian if used for other propagator?
Awarded Jun 14 at 8:02
Starlink Satellite Orbits
Awarded Jun 13 at 1:55
What is the difference between "Air-augmented rocket propulsion" and "integral rocket-ramjet propulsion"?
Awarded Jun 10 at 21:20
Where did Heinlein say "Once you get to Earth orbit, you're halfway to anywhere in the Solar System"?
Awarded Jun 9 at 22:46
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