Skip to main content

Top Questions

18 votes
7 answers
7k views

Why do scientists use specialized units for distance when metric units are perfectly adequate?

22 votes
5 answers
8k views

What is SpaceX doing differently with their Falcon 9 so that it doesn't cost as much as the Space Shuttle?

24 votes
2 answers
4k views

What is the provenance of this photo of the Great Lakes from space?

8 votes
2 answers
805 views

How to determine the number of Multi Layer Insulation layers for a satellite?

6 votes
2 answers
1k views

What are the parameters of the Voyager high-gain antenna?

2 votes
3 answers
4k views

Could SpaceX ever make a Heavy version of Starship Super Heavy

9 votes
1 answer
1k views

Why is there no difference between a transfer orbit delta-V and a capture orbit delta-V for Earth?

5 votes
1 answer
569 views

How do you measure specific impulse Isp of a rocket engine?

7 votes
1 answer
801 views

Can the equipment behind panels of Russian ISS modules be reconfigured like the US modules?

1 vote
1 answer
203 views

Could we make space roads? Like a space elevator between planets?

5 votes
1 answer
298 views

Would Starship do a direct descent into the atmosphere and aerobrake or do a capture burn before aero braking

4 votes
1 answer
703 views

Why is this satellite's solar panel oscillating?

2 votes
1 answer
390 views

Shuttle dance bank angle timeline

3 votes
1 answer
283 views

Feasibility of landing all 3 Cores of the Falcon Heavy on Droneships [duplicate]

4 votes
2 answers
219 views

Will a human mission to Mars require artificial gravity?

4 votes
1 answer
243 views

Unable to find Incident Report for aborted launch of first Shuttle flight

5 votes
1 answer
175 views

Has SpaceX attempted to recover wreckage from its Starship launches?

1 vote
2 answers
337 views

What happened to the Atlantis Project?

4 votes
1 answer
324 views

How feasible is dragging a 1 km asteroid into Mars orbit? (For All Mankind Spoiler Alert)

5 votes
2 answers
145 views

Using Orbital Rings to Achieve High Escape Velocity

2 votes
4 answers
198 views

How can one terraform Mercury?

4 votes
1 answer
194 views

Theoretical viability of a liquid rocket engine concept [closed]

0 votes
1 answer
125 views

Why are the service modules on Crew Dragon and Starliner expended after every flight?

0 votes
1 answer
114 views

Star Tracker Absolute Accuracy

1 vote
2 answers
114 views

Feasibility of landing Starship's Super Heavy booster on a droneship

3 votes
1 answer
142 views

What are the likely issues and challenges in developing LTC: Coordinated Lunar Time?

1 vote
1 answer
77 views

How to find out details on which country owns how many GEO stationary orbital slots

2 votes
2 answers
120 views

Is it possible to change a satellite's eccentricity without changing semimajor axis (instantaneous maneuver paradigm)? What else needs to "give"?

0 votes
0 answers
183 views

Is China on track for landing humans on mars?

2 votes
1 answer
86 views

Radial hyperbolic trajectories

4 votes
1 answer
110 views

Would a ice core samples taken on the Moon provide us with information about the past that we cannot easily obtain in other ways?

3 votes
1 answer
105 views

Spring release system 2.1m long rocket with a weight of 20kg

0 votes
1 answer
76 views

Landing Zones 1 and 2 in Cape Canaveral and yet launching from KSC?

1 vote
1 answer
57 views

change epoch to ( epoch year and Juilan day fraction )

0 votes
1 answer
140 views

How much deltaV would it take to launch from the top of mount Everest straight up then circularize at 200km once in space?

2 votes
1 answer
212 views

Why are rockets launched from speed 0 instead of giving them a speed boost with a terrestrial vehicle? [duplicate]

1 vote
1 answer
116 views

Why did SpaceX decide to change their Starship names from SN to just S?

1 vote
1 answer
78 views

How has rocket propulsion system designs developed over the years in terms of effectiveness?

3 votes
0 answers
96 views

How can I calculate the altitude my waterrocket will fly with a certain amount of pressure?

2 votes
0 answers
89 views

How to calculate the ascending and descending node, as well as the true anomaly

4 votes
1 answer
121 views

Structural Mass Fraction

1 vote
0 answers
69 views

Obtain all the points of the orbit of a celestial body in the solar system

0 votes
0 answers
68 views

What improvements will Axiom Space's Artemis spacesuit bring to current EMUs?

1 vote
0 answers
64 views

What is the ratio of air and ethyl alcohol that must be in order to power a rocket engine? [closed]

2 votes
0 answers
63 views

What are some best practices for coding a satellite orbit propagator and ground track plotter?

2 votes
1 answer
62 views

Where can I get an earth-centric map of space?

0 votes
0 answers
61 views

Can infrastructure for generating a protective artificial magnetic field around a planet also be used to propel nearby spacecraft?

1 vote
0 answers
60 views

Tradeoff between a LEO-LEO vs LEO-GEO data relay


Looking for more? Browse the complete list of questions, or popular tags. Help us answer unanswered questions.