User uhoh

5 votes

0 answers

372 views

+100

How many kilograms of nickel particles will be dispersed in Earth's atmosphere by dumping old ISS batteries overboard?

asked Mar 13, 2021 at 6:45

7 votes

0 answers

231 views

+100

Does Privateer's tracking software Crow's Nest actually offer users something better than the previous state of the art?

asked Mar 6, 2022 at 5:22

3 votes

1 answer

434 views

+100

Was it a "Soviet military satellite not in any of the catalogs?"

asked Sep 3, 2016 at 1:12

15 votes

3 answers

1k views

+400

Puzzler: Precisely what maximum distance from the Earth did the Apollo 13 astronauts achieve?

asked Dec 31, 2018 at 1:15

7 votes

0 answers

647 views

+100

What makes exhaust from aluminum-based SRB propellant so bright?

asked Mar 25, 2018 at 4:08

15 votes

3 answers

1k views

+200

Puzzler: Precisely what maximum distance from the Earth did the Apollo 13 astronauts achieve?

asked Dec 31, 2018 at 1:15

1 vote

1 answer

177 views

+100

On what target will TransAstra Corp's MiniBee practice its Optical Mining technique?

asked Jun 14, 2019 at 1:08

5 votes

0 answers

334 views

+100

Is JWST actually in a Lissajous orbit? What will it look like? Implications for station-keeping?

asked Dec 28, 2021 at 22:17

2 votes

0 answers

48 views

+100

When are close approaches of Helios 1 and 2 to the Earth? Any historical tracking data? Any reports in sky surveys?

asked Dec 19, 2020 at 4:47

8 votes

0 answers

236 views

+100

Did CNSA astronaut Zhai Zhigang see the ISS during an EVA?

asked Sep 22, 2019 at 23:23

2 votes

0 answers

46 views

+100

What is the substantial difference between transit orbits and manifold trajectories in the frame of circular restricted three body problem?

asked Oct 31, 2022 at 10:46

1 vote

1 answer

141 views

+100

How to find the average ambient pressure during rocket ascent?

asked Oct 20, 2022 at 10:13

3 votes

0 answers

195 views

+100

From where will the planned Artemis I launch be visible?

asked Oct 14, 2022 at 10:18

5 votes

2 answers

517 views

+400

Have any satellites had lights visible from Earth besides FITSat-1?

asked Dec 20, 2019 at 16:28

6 votes

2 answers

220 views

+200

Which deep-space spacecraft flew closest by Earth during a gravitational assist?

asked Oct 25, 2021 at 22:19

2 votes

2 answers

637 views

+100

Can the Tirada-2S satellite communications electronic jamming system be used to jam the Starlink network?

asked Oct 9, 2022 at 14:42

4 votes

0 answers

125 views

+100

Did they figure out what caused the "high-pitched scratching noise" that Perseverance recorded with its microphone? Was it static discharge?

asked Jun 3, 2021 at 5:13

1 vote

0 answers

95 views

+100

How does the wind behave throughout the day in Jezero Crater? (worried about Ingenuity)

asked Sep 18, 2021 at 11:09

9 votes

0 answers

246 views

+100

Has there ever been a deliberate "Find A Satellite" challenge? Actually, could there be?

asked May 18, 2021 at 1:09

11 votes

2 answers

342 views

+100

Is lunar exploration going to need a whole heck of a lot of RTGs? If so, have they started firing up the RTG-making reactors yet?

asked Nov 18, 2021 at 4:15

1 vote

1 answer

177 views

+100

Why not add tracking features to upper stages? Has something like this ever been proposed?

asked Feb 23, 2022 at 18:31

4 votes

2 answers

310 views

+100

When and what was the first successful photograph of an orbital spacecraft from Earth taken?

asked Jun 24, 2020 at 1:03

3 votes

0 answers

352 views

+200

Did any of Voyagers' receivers' front ends take advantage of the "cold of space" to lower noise? (communications or radio/plasma science receivers)

asked Oct 10, 2018 at 2:21

7 votes

1 answer

198 views

+200

Has Same Beam Interference (SBI) been used or at least tested at Mars? Are there plans to use it in the next few years?

asked Sep 11, 2020 at 3:48

5 votes

1 answer

265 views

+100

Has Hubble ever focused on something close enough that it had to move away from being focused at infinity?

asked Mar 20, 2021 at 9:43

9 votes

0 answers

195 views

+200

Was the Doppler shift of InSight's "tone" measured and plotted somewhere?

asked Nov 27, 2018 at 3:21

5 votes

1 answer

159 views

+100

When NASA spacecraft arrive at Mars, is Mars always always above the horizon in the US?

asked Feb 18, 2021 at 22:11

6 votes

2 answers

365 views

+100

Can JWST come in for a pit stop? Is the fuel supply on JWST adequate for a transfer to an Earth Moon libration point to allow repairs?

asked May 7, 2022 at 16:43

7 votes

2 answers

390 views

+100

When jettisoning heavy objects from the ISS e.g. 2.9 tons of batteries+, how much angular impulse does the station get? Corrective actions necessary?

asked May 8, 2021 at 2:53

5 votes

1 answer

150 views

+100

How is the maximum data rate of the Psyche mission's Deep Space Optical Communications (DSOC) system expected to scale with distance?

asked Mar 8, 2022 at 2:22

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How many kilograms of nickel particles will be dispersed in Earth's atmosphere by dumping old ISS batteries overboard?

Does Privateer's tracking software Crow's Nest actually offer users something better than the previous state of the art?

Was it a "Soviet military satellite not in any of the catalogs?"

Puzzler: Precisely what maximum distance from the Earth did the Apollo 13 astronauts achieve?

What makes exhaust from aluminum-based SRB propellant so bright?

Puzzler: Precisely what maximum distance from the Earth did the Apollo 13 astronauts achieve?

On what target will TransAstra Corp's MiniBee practice its Optical Mining technique?

Is JWST actually in a Lissajous orbit? What will it look like? Implications for station-keeping?

When are close approaches of Helios 1 and 2 to the Earth? Any historical tracking data? Any reports in sky surveys?

Did CNSA astronaut Zhai Zhigang see the ISS during an EVA?

What is the substantial difference between transit orbits and manifold trajectories in the frame of circular restricted three body problem?

How to find the average ambient pressure during rocket ascent?

From where will the planned Artemis I launch be visible?

Have any satellites had lights visible from Earth besides FITSat-1?

Which deep-space spacecraft flew closest by Earth during a gravitational assist?

Can the Tirada-2S satellite communications electronic jamming system be used to jam the Starlink network?

Did they figure out what caused the "high-pitched scratching noise" that Perseverance recorded with its microphone? Was it static discharge?

How does the wind behave throughout the day in Jezero Crater? (worried about Ingenuity)

Has there ever been a deliberate "Find A Satellite" challenge? Actually, could there be?

Is lunar exploration going to need a whole heck of a lot of RTGs? If so, have they started firing up the RTG-making reactors yet?

Why not add tracking features to upper stages? Has something like this ever been proposed?

When and what was the first successful photograph of an orbital spacecraft from Earth taken?

Did any of Voyagers' receivers' front ends take advantage of the "cold of space" to lower noise? (communications or radio/plasma science receivers)

Has Same Beam Interference (SBI) been used or at least tested at Mars? Are there plans to use it in the next few years?

Has Hubble ever focused on something close enough that it had to move away from being focused at infinity?

Was the Doppler shift of InSight's "tone" measured and plotted somewhere?

When NASA spacecraft arrive at Mars, is Mars always always above the horizon in the US?

Can JWST come in for a pit stop? Is the fuel supply on JWST adequate for a transfer to an Earth Moon libration point to allow repairs?

When jettisoning heavy objects from the ISS e.g. 2.9 tons of batteries+, how much angular impulse does the station get? Corrective actions necessary?

How is the maximum data rate of the Psyche mission's Deep Space Optical Communications (DSOC) system expected to scale with distance?