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 Popular Question
Question with 1,000 views. This badge can be awarded multiple times.
Awarded 3264 times.
When was Newton “not good enough” for spaceflight; first use and first absolute requirement for relativistic corrections?
Awarded 5 hours ago
What materials are naturally released into space from earth?
Awarded 8 hours ago
Is there any compiler available for HAL/S?
Awarded 9 hours ago
Why do space settlement designers use tori instead of cylinders for space settlements?
Awarded 12 hours ago
Space Flight Simulator [duplicate]
Awarded 2 days ago
What happens differently when ISS is inside this red boundary (Russia & Europe & …)?
Awarded 2 days ago
Can a VASIMR Plasma engine be used to launch a rocket?
Awarded Dec 6 at 17:05
Is it harder to enter an atmosphere perpendicular or at an angle
Awarded Dec 6 at 14:45
Is a midspace space station between Earth and Mars practical?
Awarded Dec 6 at 8:10
What makes an antenna “high gain”, and high gain as opposed to what alternative(s)?
Awarded Dec 6 at 0:00
Why does a gravity capture require a loss of velocity?
Awarded Dec 5 at 5:20
Which object has been to space the most times?
Awarded Dec 4 at 23:05
What's the shiny silver turnip on the bottom of this Ariane 5 launcher?
Awarded Dec 4 at 14:50
If there was a non-rotating skyhook in Earth orbit, what would re-entry be like after dropping from its foot?
Awarded Dec 3 at 22:50
What source of raw materials could be found in space for making plastics?
Awarded Dec 3 at 22:10
Is it possible for a moon to have a higher surface gravity than the planet it is attached to?
Awarded Dec 3 at 6:50
Low Energy Transfer within Earth-Moon system
Awarded Dec 2 at 19:45
How much piloting did the Apollo astronauts actually do?
Awarded Dec 2 at 10:10
Huygens Lander: Why The Short Battery Life?
Awarded Dec 2 at 8:10
Name for geostationary orbit around another planet
Awarded Dec 1 at 19:50
Does a gravity assist increase the g force on the ship?
Awarded Nov 30 at 16:30
Could a satellite in LEO “pump” or change mass distribution to gain forward momentum?
Awarded Nov 29 at 4:30
How to calculate Earth's velocity vector in ECEF?
Awarded Nov 27 at 14:45
Apollo CM heat shield burnt pattern around RCS thrusters
Awarded Nov 27 at 13:00
Could a Falcon Heavy really put six GPS Block III satellites in orbit at the same time?
Awarded Nov 26 at 17:50
Could a balloon or airplane launched rocket get humans into orbit?
Awarded Nov 26 at 12:00
Two totally different pictures of Apollo 15 landing site released by NASA 40 years apart. What causes these differences? [closed]
Awarded Nov 26 at 10:15
How is the ISS helpful for launching cubesats and minisats?
Awarded Nov 26 at 8:45
How did the USSR track Gagarin's Vostok-1 orbital flight? Was tracking capability an issue in the choice of orbit?
Awarded Nov 26 at 8:20
If I wanted to reconstruct an entire Apollo mission's crewed spacecraft trajectories, what are the key sources of historical data I'd look for?
Awarded Nov 25 at 15:30
Did any of the Space Shuttles land through rain or rainclouds?
Awarded Nov 25 at 15:00
Did the Apollo missions fly “over the top” of the Van Allen radiation belts?
Awarded Nov 25 at 9:00
Why is there a lid on the Hubble Space Telescope?
Awarded Nov 25 at 6:15
Optimal turning from equatorial to polar orbit
Awarded Nov 23 at 18:05
Why was the APAS docking system developed?
Awarded Nov 23 at 10:40
What is the largest piece of space debris volumetrically?
Awarded Nov 22 at 7:35
Why is SpaceX not also working on a smaller version of Starship?
Awarded Nov 21 at 10:55
Does trajectory of an object orbiting a planet depend on the object's mass? (With hypothetical Apollo example)
Awarded Nov 21 at 9:35
Will Curiosity and the Mars 2020 rover be able to communicate with each other via a Mars orbiter?
Awarded Nov 20 at 12:55
What antenna is this in an Apollo 15 LM photo?
Awarded Nov 19 at 21:05
ECI to LVLH conversion
Awarded Nov 19 at 19:45
How does the propellant flow during descent on SpaceX's Falcon 9 first stage?
Awarded Nov 19 at 8:45
What typically ends a satellite's life?
Awarded Nov 18 at 6:00
How do rate gyros measure yaw, roll and pitch rates?
Awarded Nov 17 at 19:55
How can Bielliptic transfers be more efficient than Hohmann transfers?
Awarded Nov 17 at 10:00
How does JAXA's “Int-Ball” manage airflow to optimally navigate inside the ISS?
Awarded Nov 17 at 5:25
Where can I find “Space policy directive 1”?
Awarded Nov 17 at 4:00
How to find the TLE (two-line element) for a satellite using orbital parameters?
Awarded Nov 17 at 3:30
Do we have the capability to place a satellite in the Sun-Earth L4/L5 Lagrange points?
Awarded Nov 15 at 15:10
How is the CG of rocket found after the complete assembly
Awarded Nov 14 at 16:10
Most common causes of 21st century launch failures and how often do launches fail?
Awarded Nov 14 at 13:05
Who was the first human to sleep - perchance to dream - on the Moon?
Awarded Nov 14 at 10:15
How is chamber pressure and temperature determined for cold gas thrusters?
Awarded Nov 13 at 23:15
What documentation remains from Apollo?
Awarded Nov 13 at 13:10
Why should be velocity through the nozzle throat be sonic?
Awarded Nov 13 at 12:50
Why don't we shield existing CPUs from radiation instead of designing new ones?
Awarded Nov 13 at 9:30
Is there an equivilant to aircraft ATA100 numbering system for Spacecraft?
Awarded Nov 12 at 16:10
Did any astronauts on a mission complain about waking up?
Awarded Nov 11 at 14:05
How do rovers brake/decelerate?
Awarded Nov 11 at 1:10
How does a gamma ray altimeter work? What kind of sensor is used?
Awarded Nov 10 at 18:15
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