User Camille Goudeseune

37 votes

4 answers

7k views

Why did Starhopper's exhaust plume become brighter just before landing?

spacex raptor

asked Aug 27, 2019 at 22:39

29 votes

1 answer

7k views

Why don't lasers last long in space?

laser osiris-rex

asked Jan 19, 2021 at 22:50

23 votes

2 answers

3k views

How does steel deteriorate in translunar space?

radiation materials spectroscopy

asked Dec 2, 2020 at 21:45

15 votes

2 answers

3k views

How hot do rocket engine nozzles get?

engineering nozzle merlin-1d heat

asked Oct 27, 2020 at 21:07

12 votes

1 answer

3k views

After Crew Dragon launch abort, was Falcon 9's detonation intentional?

spacex falcon-9 dragon-v2 separation

asked Jan 19, 2020 at 23:17

11 votes

2 answers

255 views

Why did Hayabusa-2's capsule's parachute have transparent panels?

materials parachute jaxa hayabusa2

asked Dec 6, 2020 at 21:36

9 votes

2 answers

880 views

Why make X-ray shielding from titanium, when lead is 6 times lighter?

radiation materials shielding

asked Dec 2, 2019 at 23:25

9 votes

1 answer

196 views

How heavy were Perseverance's balance masses?

mars perseverance curiosity engineering aerodynamics

asked Mar 8, 2021 at 19:15

9 votes

1 answer

262 views

How fast are Ingenuity's knees wearing out?

landing ingenuity sensors legs lifetime

asked Mar 24 at 22:16

9 votes

1 answer

129 views

How much energy is lost by damping yaw from a SpinLaunch?

launch physics engineering rotation

asked Apr 4 at 4:50

8 votes

2 answers

236 views

Why might Ingenuity be able to fly faster when it flies higher?

asked Mar 15 at 21:37

8 votes

2 answers

287 views

Fancy locomotion for rovers

rovers esa exomars mechanisms

asked Dec 10, 2021 at 20:53

8 votes

3 answers

426 views

Might Ingenuity tip over?

mars perseverance aerodynamics weather ingenuity

asked Apr 9, 2021 at 15:19

7 votes

1 answer

129 views

What could Perseverance listening to Ingenuity reveal?

mars atmosphere perseverance ingenuity

asked May 7, 2021 at 19:24

7 votes

1 answer

150 views

Did the rovers' cruise balance masses have a noticeable impact on Mars?

perseverance insight meteorites crater mars-reconnaissance-orbiter

asked Mar 9, 2021 at 0:21

7 votes

1 answer

266 views

Crawler-transporter's ground pressure?

crawler-transporter

asked Mar 11 at 19:48

7 votes

2 answers

213 views

Did any rockets have 5- or 7-fold symmetry?

rockets sounding-rocket structural-design

asked Aug 30, 2020 at 17:16

6 votes

3 answers

3k views

How is foot-pounds of energy defined?

orbital-mechanics history measurement unit-systems

asked Aug 5, 2019 at 15:05

5 votes

1 answer

135 views

Why were some early interplanetary probes pressurized?

probe vacuum sensors

asked Aug 15, 2019 at 16:47

5 votes

1 answer

246 views

How does an onboard atomic clock help interplanetary navigation?

asked Jun 9, 2019 at 20:42

5 votes

1 answer

138 views

Can a Mars orbiter mass only 50 kg?

propulsion delta-v ion-thruster electric-propulsion mars-orbiters

asked Oct 11, 2019 at 20:21

5 votes

1 answer

205 views

Could Tianwen-1, Hope, or Mars 2020 image one another en route to Mars?

mars perseverance camera tianwen-1 al-amal-emm

asked Aug 6, 2020 at 20:01

5 votes

1 answer

180 views

Do astronauts on ISS notice Earth's seasons?

iss earth astronaut-lifestyle

asked Dec 27, 2020 at 22:57

4 votes

1 answer

59 views

Exoplanet orbitable in permanent umbra?

orbital-mechanics spacecraft exoplanet station-keeping kuiper-belt

asked Oct 9, 2021 at 3:26

4 votes

1 answer

114 views

Details about Rolls-Royce / UK Space Agency's nuclear propulsion?

nuclear-propulsion uk-space

asked Jan 14, 2021 at 21:51

4 votes

1 answer

199 views

Is Ingenuity a "spacecraft?"

spacecraft terminology ingenuity

asked Feb 10 at 17:44

4 votes

0 answers

272 views

How heavy is SpaceX's Octagrabber?

spacex falcon-9 landing droneship

asked Nov 2, 2020 at 21:57

4 votes

1 answer

274 views

Why is "Terminator Tape" electrically conductive?

artificial-satellite debris atmospheric-drag deorbit

asked Jan 24, 2020 at 5:56

3 votes

1 answer

101 views

'Noodle' zigzagging of a mapping spectrometer

cassini spectroscopy

asked Sep 1, 2019 at 16:02

3 votes

1 answer

119 views

Falcon 9's theoretical horizontal performance

falcon-9 rocket-sled spherical-cow

asked Nov 23, 2020 at 18:13

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35 Questions

Why did Starhopper's exhaust plume become brighter just before landing?

Why don't lasers last long in space?

How does steel deteriorate in translunar space?

How hot do rocket engine nozzles get?

After Crew Dragon launch abort, was Falcon 9's detonation intentional?

Why did Hayabusa-2's capsule's parachute have transparent panels?

Why make X-ray shielding from titanium, when lead is 6 times lighter?

How heavy were Perseverance's balance masses?

How fast are Ingenuity's knees wearing out?

How much energy is lost by damping yaw from a SpinLaunch?

Why might Ingenuity be able to fly faster when it flies higher?

Fancy locomotion for rovers

Might Ingenuity tip over?

What could Perseverance listening to Ingenuity reveal?

Did the rovers' cruise balance masses have a noticeable impact on Mars?

Crawler-transporter's ground pressure?

Did any rockets have 5- or 7-fold symmetry?

How is foot-pounds of energy defined?

Why were some early interplanetary probes pressurized?

How does an onboard atomic clock help interplanetary navigation?

Can a Mars orbiter mass only 50 kg?

Could Tianwen-1, Hope, or Mars 2020 image one another en route to Mars?

Do astronauts on ISS notice Earth's seasons?

Exoplanet orbitable in permanent umbra?

Details about Rolls-Royce / UK Space Agency's nuclear propulsion?

Is Ingenuity a "spacecraft?"

How heavy is SpaceX's Octagrabber?

Why is "Terminator Tape" electrically conductive?

'Noodle' zigzagging of a mapping spectrometer

Falcon 9's theoretical horizontal performance