User Sergiy Lenzion

19 votes

1 answer

2k views

Did any of the Space Shuttles land through rain or rainclouds?

asked Nov 22, 2019 at 7:29

19 votes

1 answer

1k views

Did Streptococcus mitis survive 950 days in the lunar environment?

asked May 24, 2020 at 4:21

17 votes

1 answer

2k views

Apollo CM heat shield burnt pattern around RCS thrusters

asked Nov 26, 2019 at 8:00

13 votes

1 answer

1k views

Who was the first to successfully implement on practice ablative heat shield?

asked Nov 30, 2019 at 5:22

13 votes

1 answer

2k views

Reentry without pressure suits in Apollo: was there a formal risk assesment?

asked Nov 23, 2019 at 5:22

13 votes

1 answer

2k views

How do astronauts brew tea on ISS and what brewing temperature is common?

asked Dec 17, 2019 at 8:49

11 votes

0 answers

522 views

Were there any launch vehicles with so heavily pronounced Plume Induced Flow Separation (PIFS), other than Saturn V?

asked Dec 25, 2019 at 7:49

11 votes

1 answer

1k views

How would the state vector be updated in the Apollo Guidance Computer during coasting to/from the moon if communication with Earth was lost entirely?

asked Dec 1, 2019 at 8:29

11 votes

3 answers

1k views

How did LM circuit breakers operate? (famous engine arm CB broken by Aldrin)

asked Nov 21, 2019 at 7:32

11 votes

1 answer

423 views

Were any mammals born in space (or are there any confirmed planned missions to breed them)?

asked Dec 10, 2019 at 10:15

10 votes

1 answer

1k views

Did Apollo astronauts play on the Moon their pre-recorded music?

asked Dec 30, 2019 at 9:17

8 votes

2 answers

661 views

How much of the printed materials (manuals, instructions etc.) were allocated for the crew's use in Space Shuttles?

asked Jan 17, 2020 at 9:56

8 votes

2 answers

648 views

Did NASA ever supply astronauts with canned food?

asked Dec 6, 2019 at 5:57

8 votes

1 answer

413 views

Were flown lunar rover miniature license plates approved for the Apollo-15 flight?

asked Nov 27, 2019 at 9:38

8 votes

5 answers

2k views

Does trajectory of an object orbiting a planet depend on the object's mass? (With hypothetical Apollo example)

asked Nov 20, 2019 at 7:31

7 votes

2 answers

828 views

What is the fate of SLA fairings jettisoned from lunar mission spacecrafts?

asked Nov 20, 2019 at 9:41

7 votes

1 answer

371 views

Were there any cases of woodpeckers damaging Shuttle External Tank insulation other than that of STS-70?

asked Dec 4, 2019 at 1:38

7 votes

2 answers

625 views

What was the first rocket with de Laval (convergent-divergent) nozzle to fly?

asked Dec 16, 2019 at 9:36

7 votes

1 answer

552 views

How exactly did Jupiter change Ulysses orbital plane from nearly ecliptic to polar?

asked Dec 12, 2019 at 10:19

6 votes

0 answers

1k views

Why is the diameter of the boosters of some launch vehicles smaller than the diameter of their payload fairing?

asked Dec 21, 2019 at 6:31

6 votes

2 answers

546 views

How hot was the surface of RTG radiator which powered ALSEP on Apollo-12?

asked Dec 11, 2019 at 9:42

6 votes

1 answer

698 views

How cryogenic oxygen was heated up for CM cabin repressurization?

asked Nov 18, 2019 at 8:27

5 votes

1 answer

455 views

What was back-up plan in case of Apollo CSM Primary Guidance System IMU went to gimbal lock?

asked Nov 22, 2019 at 10:52

5 votes

1 answer

345 views

What was the primary role of epoxy layer between metal structure and insulation foam on External Tank of Space Shuttle?

asked Dec 3, 2019 at 9:53

5 votes

0 answers

2k views

Solar system galactic velocity vector relative to ecliptic plane

asked Dec 15, 2019 at 6:00

5 votes

1 answer

318 views

How exactly was Apollo CSM attitude changed (from a current one to a new required one)?

asked Jan 31, 2020 at 16:04

4 votes

1 answer

282 views

What will happen to a spacecraft if it cancels its galactic velocity?

asked Feb 2, 2020 at 5:57

4 votes

1 answer

483 views

Who are these people inside Apollo Command Module (presumably posing for advertisement photoshoot)?

asked Jan 1, 2020 at 9:46

4 votes

1 answer

272 views

How exactly is the balance of minerals handled on ISS with the use of reclaimed (demineralised) water for human consumption?

asked Jan 12, 2020 at 5:17

4 votes

2 answers

597 views

What is the reason for secondary oscillations in apogee and perigee plots for objects 41332 and 41333?

asked Dec 26, 2019 at 23:06

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36 Questions

Did any of the Space Shuttles land through rain or rainclouds?

Did Streptococcus mitis survive 950 days in the lunar environment?

Apollo CM heat shield burnt pattern around RCS thrusters

Who was the first to successfully implement on practice ablative heat shield?

Reentry without pressure suits in Apollo: was there a formal risk assesment?

How do astronauts brew tea on ISS and what brewing temperature is common?

Were there any launch vehicles with so heavily pronounced Plume Induced Flow Separation (PIFS), other than Saturn V?

How would the state vector be updated in the Apollo Guidance Computer during coasting to/from the moon if communication with Earth was lost entirely?

How did LM circuit breakers operate? (famous engine arm CB broken by Aldrin)

Were any mammals born in space (or are there any confirmed planned missions to breed them)?

Did Apollo astronauts play on the Moon their pre-recorded music?

How much of the printed materials (manuals, instructions etc.) were allocated for the crew's use in Space Shuttles?

Did NASA ever supply astronauts with canned food?

Were flown lunar rover miniature license plates approved for the Apollo-15 flight?

Does trajectory of an object orbiting a planet depend on the object's mass? (With hypothetical Apollo example)

What is the fate of SLA fairings jettisoned from lunar mission spacecrafts?

Were there any cases of woodpeckers damaging Shuttle External Tank insulation other than that of STS-70?

What was the first rocket with de Laval (convergent-divergent) nozzle to fly?

How exactly did Jupiter change Ulysses orbital plane from nearly ecliptic to polar?

Why is the diameter of the boosters of some launch vehicles smaller than the diameter of their payload fairing?

How hot was the surface of RTG radiator which powered ALSEP on Apollo-12?

How cryogenic oxygen was heated up for CM cabin repressurization?

What was back-up plan in case of Apollo CSM Primary Guidance System IMU went to gimbal lock?

What was the primary role of epoxy layer between metal structure and insulation foam on External Tank of Space Shuttle?

Solar system galactic velocity vector relative to ecliptic plane

How exactly was Apollo CSM attitude changed (from a current one to a new required one)?

What will happen to a spacecraft if it cancels its galactic velocity?

Who are these people inside Apollo Command Module (presumably posing for advertisement photoshoot)?

How exactly is the balance of minerals handled on ISS with the use of reclaimed (demineralised) water for human consumption?

What is the reason for secondary oscillations in apogee and perigee plots for objects 41332 and 41333?