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uhoh
  • Member for 7 years, 3 months
  • Last seen this week
  • Taipei, Earth

508 Offered bounties for 62,050 reputation

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?

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?

3 votes
1 answer
434 views
+100

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

15 votes
3 answers
1k views
+400

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

7 votes
0 answers
647 views
+100

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

15 votes
3 answers
1k views
+200

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

1 vote
1 answer
177 views
+100

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

5 votes
0 answers
334 views
+100

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

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?

8 votes
0 answers
236 views
+100

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

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?

1 vote
1 answer
141 views
+100

How to find the average ambient pressure during rocket ascent?

3 votes
0 answers
195 views
+100

From where will the planned Artemis I launch be visible?

5 votes
2 answers
517 views
+400

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

6 votes
2 answers
220 views
+200

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

2 votes
2 answers
637 views
+100

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

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?

1 vote
0 answers
95 views
+100

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

9 votes
0 answers
246 views
+100

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

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?

1 vote
1 answer
177 views
+100

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

4 votes
2 answers
310 views
+100

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

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)

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?

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?

9 votes
0 answers
195 views
+200

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

5 votes
1 answer
159 views
+100

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

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?

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?

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?

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