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Sudhanshu Gaur
  • Member for 4 years, 10 months
  • Last seen more than a month ago
89 votes
4 answers
23k views

Why destroy Juno at the end of the mission?

67 votes
17 answers
21k views

Why is using a space elevator cheaper than rocket power?

59 votes
4 answers
57k views

Why not build Saturn V's again?

  • 6,553
58 votes
7 answers
5k views

How do we know the Apollo Moon landings are real?

  • 20.9k
55 votes
4 answers
40k views

What was the fate of the main core of the first Falcon Heavy launch?

  • 593
44 votes
3 answers
10k views

Is a SpaceX launch completely automated?

  • 1,179
44 votes
4 answers
11k views

Why can't Falcon 9 fairings touch the water?

  • 1,294
42 votes
5 answers
10k views

Where does space begin on planets without atmospheres?

  • 703
39 votes
2 answers
5k views

Is it possible to observe space debris with Binoculars?

  • 2,319
38 votes
1 answer
39k views

What is a "suicide burn"?

  • 7,202
36 votes
3 answers
5k views

Do rockets, launch vehicles or spacecraft contain a black-box?

  • 2,226
34 votes
5 answers
8k views

India just shot down a satellite from the ground. At what altitude range is the resulting debris field?

  • 148k
34 votes
4 answers
6k views

When did the concept of "stages" enter rocketry?

  • 3,531
33 votes
4 answers
6k views

Will the Falcon Heavy be far enough in 12 seconds to not cause damage?

  • 119k
32 votes
2 answers
12k views

Why didn’t the Spacecraft used for the Apollo 11 mission melt in the Earth’s Atmosphere?

31 votes
2 answers
7k views

Why do we only use Soyuz to send humans to the ISS?

  • 1,057
28 votes
4 answers
12k views

Could the sun be used as a gravity assist outside the solar system (with current tech)?

  • 16.1k
27 votes
3 answers
1k views

What would sounds on Mars be like?

27 votes
3 answers
6k views

How can Elon Musk's Tesla actually reach Mars orbit?

  • 6,810
27 votes
5 answers
62k views

Is it possible to reach space using home-made rocket?

  • 822
27 votes
3 answers
7k views

SpaceX Starship landing on Moon or Mars: why doesn't it fall over?

  • 1,271
26 votes
1 answer
5k views

Would this chair support astronaut during launch in Crew Dragon

  • 15.1k
26 votes
7 answers
19k views

Could a Human reach escape velocity by jumping from the surface of Ceres (a dwarf planet)?

26 votes
4 answers
3k views

When did planetary scientists realize Venus' surface pressure was almost 100x that on Earth? How did they find out?

  • 148k
24 votes
1 answer
3k views

Why is fuel ratio different for upper stage of a rocket?

23 votes
3 answers
16k views

Maximum survivable atmospheric pressure

  • 2,800
22 votes
2 answers
16k views

Voyager 3: what would have been its mission, and why was it canceled?

  • 122k
22 votes
4 answers
6k views

Why 31 engines for the BFR?

22 votes
2 answers
4k views

Why was orbital rendezvous considered so controversial?

  • 1,334
21 votes
2 answers
5k views

Could SpaceX land on the moon today?

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