Space Exploration Beta

Popular Question

 Popular Question
Question with 1,000 views. This badge can be awarded multiple times.
Awarded 4335 times.
The Chinese Mars rover and lander can be seen in the same picture. What device took the photo?
Awarded 15 hours ago
Can “engine” and “motor” be used interchangeably in spaceflight? Are there any cases where they can't be?
Awarded yesterday
Refueling a Mars mission on the way
Awarded 2 days ago
How well would Max Faget's April 1, 1969 design for the Space Shuttle have actually worked? What would have been the major problems?
Awarded Jun 9 at 17:50
Are there any greater risks of traveling significantly faster to another planet?
Awarded Jun 9 at 11:40
Is this white stuff seen by the Mars Phoenix Lander water or carbon dioxide ice?
Awarded Jun 9 at 3:41
How realistic is the 1 kg/km² solar sail in “Death's End”?
Awarded Jun 8 at 11:06
Why do the ISS' Thermal Rotary Radiators need to tilt?
Awarded Jun 8 at 7:03
Is it possible to use RCS instead of gimbal to control first stage attitude?
Awarded Jun 6 at 13:17
Lunar Terrain Model in Apollo Guidance Computer
Awarded Jun 6 at 10:35
Why do Canopus Star Trackers track Canopus? Why not so Sirius?
Awarded Jun 5 at 8:18
Does the detection of gravitational waves prove we can travel faster than the speed of light?
Awarded Jun 5 at 2:58
How much UV radiation will Mars inhabitants receive?
Awarded Jun 4 at 17:16
Did astronaut candidates have a lung capacity test, as portrayed in the movie The Right Stuff?
Awarded Jun 3 at 17:15
How does the chamber pressure affect the performance of a Rocket Engine?
Awarded Jun 3 at 15:07
Why can solid rockets be both the skinniest and most spherical launch vehicles while liquid fuel rockets have a more limited range of aspect ratios?
Awarded Jun 2 at 18:42
Is it possible to refuel the James Webb Space Telescope?
Awarded Jun 1 at 18:48
Why did each F-1 engine have dual fuel feedlines?
Awarded Jun 1 at 12:51
How do satellites remain safe from space debris and meteorites?
Awarded May 31 at 19:48
What do the banana values mean in this tweeted plot of heavy lift vehicle capabilities?
Awarded May 31 at 11:35
When are there launch windows to Neptune via Jupiter?
Awarded May 31 at 8:55
Help on Nozzle Throat Area Calculation
Awarded May 29 at 15:30
Why would a Deep Space Network antenna send up a carrier signal without any data?
Awarded May 29 at 9:50
How did the kerosene-burning Black Arrow have transparent exhaust? (seems to just “hover” in photos)
Awarded May 28 at 14:12
Radiation pattern and signal strength of navigation satellite antennas
Awarded May 27 at 13:41
Which was louder, SRBs or SSMEs?
Awarded May 27 at 9:40
How bright is starlight in deep space?
Awarded May 26 at 3:50
Was the Apollo spacecraft always gravitationally bound to the Earth-Moon system?
Awarded May 26 at 3:02
What are the round screens show in the MOCR near position 19 (FDO?) during STS-49?
Awarded May 25 at 23:03
Was emergency burial of the Lunar Receiving Laboratory planned?
Awarded May 24 at 21:10
Why would Mars' sky appear blue at dawn and dusk, but red during the middle of the day (reverse of Earth)?
Awarded May 24 at 13:04
Using bamboo as space construction material
Awarded May 24 at 1:06
Why does the sky of Mars appear blue in this video of pictures sent back by the Chinese rover?
Awarded May 23 at 19:47
Data for Moons in the Solar System with Masses
Awarded May 23 at 15:48
What's the small white gadget with two black buttons in this video of the International Space Station?
Awarded May 23 at 12:33
What are the economics of Nuclear Thermal Propulsion?
Awarded May 23 at 11:46
How are intercontinental ballistic missiles (ICBMs) modified to be orbital launch vehicles?
Awarded May 20 at 23:17
Help with Cartesian State Vectors → Keplerian Orbit Elements C#
Awarded May 20 at 9:51
When do Mars, Venus and Earth Align?
Awarded May 20 at 9:45
Why was the Space Shuttle Orbiter's in-orbit time limited?
Awarded May 19 at 17:51
Was Sea Dragon second stage reusability ever plausible?
Awarded May 18 at 6:11
Why doesn't the BFR/Starship have a launch escape system?
Awarded May 17 at 18:41
What caused all the dust on Mars?
Awarded May 17 at 13:27
Did the FAA license the Ingenuity helicopter to fly on Mars?
Awarded May 17 at 3:21
How did the Apollo guidance computers deal with radiation?
Awarded May 15 at 21:43
How did Energia Buran handle center of mass during flight?
Awarded May 14 at 12:11
Do Falcon 9s get a thorough wash or a fresh coat of paint (they look clean pre-reflight)? [duplicate]
Awarded May 14 at 11:42
When was the general approach to the Apollo moon landings finalized?
Awarded May 13 at 23:07
What standard was used by NASA to certify the Dragon capsule controls as safe for crewed flight?
Awarded May 13 at 13:57
Terraform via moving Ceres To Mars orbit, using ion drive
Awarded May 13 at 13:57
Have things been intentionally welded in space? If so, what kinds of metals and techniques were used, and why was it necessary?
Awarded May 11 at 19:50
Would the Apollo LM be able to land on Mercury?
Awarded May 11 at 13:22
What is this long truss associated with Mir?
Awarded May 10 at 18:31
Who put their spacesuit boots on the wrong feet?
Awarded May 9 at 23:11
Has sound ever been used to diagnose a problem not shown by other measurements?
Awarded May 9 at 6:12
What did Sputnik-1 sound like? Did it use multiple tones?
Awarded May 8 at 15:33
How are thrust specifications for multi-nozzle engines given?
Awarded May 8 at 4:33
Besides health benefits, what are the advantages of including inertial gravity sections on spaceships?
Awarded May 6 at 15:27
What are the “Big 13” critical contingency spacewalks on the ISS? Have any actually been performed?
Awarded May 6 at 12:45
Is the cause of the Phobos-2 probe failure definitively known?
Awarded May 6 at 3:33
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