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Top Questions

38 votes
5 answers
5k views

How did theorists determine that the atmosphere attenuates enough to support unpowered orbits?

12 votes
4 answers
3k views

Have any bits of a space mission ever collided with a planet or large moon (not Earth) that was not a target of the mission?

3 votes
2 answers
3k views

Google maps for Space exploration

11 votes
1 answer
3k views

How close was the ISS to running out of supplies after the failure of CRS-7?

11 votes
3 answers
3k views

How can you make a rocket quieter?

10 votes
1 answer
2k views

Would the reflected sun's radiation melt ice in LEO?

20 votes
1 answer
2k views

What was the most inconsequential failure on an STS mission recorded in mission reports?

10 votes
1 answer
1k views

What is pictured in this SHERLOC camera?

5 votes
2 answers
1k views

After SLS, what is the next rocket building project for NASA?

8 votes
2 answers
530 views

Are there any sources with high-confidence state vectors for GRAIL-A?

9 votes
1 answer
1k views

Sending a Soyuz ship interplanetary - a plausible option?

9 votes
3 answers
601 views

Can Martian regolith be easily melted with microwaves?

-2 votes
3 answers
269 views

Can Solid Rockets (Aluminum-Ice) have an advantage when designing light space-tug for LEO?

6 votes
1 answer
710 views

How close do gravitational 2-body hierarchy levels get?

6 votes
2 answers
227 views

Is it possible to create an analytical ephemeris from raw position and velocity of a Body?

6 votes
1 answer
461 views

Why will Artemis II not orbit the Moon?

3 votes
1 answer
211 views

What is a Mars 5-sol orbit?

-1 votes
1 answer
331 views

What happens if the range control fails?

2 votes
1 answer
193 views

How many printed novels have been in space to date?

-2 votes
1 answer
187 views

Why is insulation used in spacecraft thermal control?

2 votes
1 answer
142 views

Mirror size and pixel resolution on planetary surfaces

4 votes
2 answers
173 views

Starship deorbit process

4 votes
1 answer
125 views

Would it make sense to compress air around a bell nozzle during booster ascent?

2 votes
1 answer
185 views

Papers/studies about shedding aerodynamic lifting surfaces with booster

2 votes
2 answers
164 views

Why is the Ariane 5 shorter than the Ariane 4?

0 votes
1 answer
98 views

Are Falcon Heavy fairings reused?

7 votes
1 answer
95 views

Establish if Payload is Still Operational - Space Track

4 votes
1 answer
121 views

Has Spacex released any reports describing how they are going to secure the payload on Starship?

-1 votes
1 answer
116 views

Why did the maiden flight of H3 fail?

3 votes
1 answer
143 views

How can you find out how many times a SpaceX fairing has been reused?

3 votes
1 answer
81 views

How much ice is there in the inner asteroid belt?

-1 votes
1 answer
145 views

Why didn't Electron's first stage go "There and Back Again"?

2 votes
1 answer
160 views

Why do the Falcon 9 fairings have soot on them?

1 vote
1 answer
123 views

What will be the escape velocity for a human body?

3 votes
1 answer
157 views

When chopsticks catch the booster by the grid fins, what is the maximum vertical speed?

3 votes
1 answer
121 views

Are the Delta IV Heavy’s attachments for SRBs removable?

3 votes
1 answer
154 views

After the Challenger disaster, the Fixed Service Structures on pads 39A & B had a new structure on the FSS. What is it?

3 votes
0 answers
229 views

How is this estimation so off?

2 votes
1 answer
102 views

Were the distances traversed by Perseverance on Sol 718 and 719 each exactly 415.27 m or were they added together 415.27 m and if so, why?

0 votes
1 answer
154 views

How long would it take before we use up all the ice in the asteroid belt? [closed]

4 votes
1 answer
55 views

How does one use the SEAESRT charging hazard graphic that NOAA provides?

0 votes
1 answer
148 views

Could an ICBM self-destruct? [closed]

7 votes
0 answers
143 views

SpaceX Super Heavy booster: Is it publicly known whether the failure of one engine to start prior to liftoff will result in a pad abort?

1 vote
1 answer
108 views

Need advice to set up reaction wheel cluster in lab

0 votes
1 answer
173 views

How does SpaceX get through regulatory issues so quickly?

4 votes
0 answers
173 views

Does a RTLS (Return to Launch Site) landing deposit more soot on the booster than a landing on a drone ship?

1 vote
1 answer
104 views

How do "halo orbits" save on propellent (delta-v)?


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