Unanswered Questions

2,149 questions with no upvoted or accepted answers
20 votes
0 answers
761 views

Have there ever been any incidents where something valuable was unintentionally thrown out with the trash?

In "What do astronauts do with their trash on the ISS?", a commentator asked the title question and was encouraged to make it a new question, but apparently never did. The linked question is ...
19 votes
0 answers
313 views

Does the post Apollo 13 roast mixtape still exist?

The debriefing party at the Hofbraugarten was merciless, beginning with a parody of the mission. The tape prepared by the Apollo 13 backup crew and the CapComs was not for the thin-skinned. The parody ...
19 votes
0 answers
586 views

What paper size do they use on the International Space Station?

We know they have at least one printer on the ISS – that's NASA-supplied so it would be in the US Orbital Segment. Presumably there is a printer in the Russian Orbital Segment as well. (Mir had a ...
19 votes
0 answers
421 views

How did "the kid" (John Meisenheimer) calculate that there was a wave in the jet stream and Explorer 1 would be okay to launch?

The tough but timely question NASA at sIxty years, will there be a new moonshot mandate? links to the NASA YouTube video NASA 60th: How It All Began which shows a lot of really nice, historical file ...
17 votes
0 answers
344 views

Has Buzz Aldrin’s Line-of-Sight rendezvous method ever been used?

Has Buzz Aldrin’s Line-of-Sight rendezvous method ever been used? Buzz Aldrin’s 1963 doctoral thesis describes a line-of-sight (LOS) rendezvous technique which is independent of computer and radar ...
16 votes
0 answers
360 views

Has NASA ever included a ground controller or astronaut becoming insane/irrational/uncooperative in a training simulation?

NASA training simulations have included a wide variety of problems thrown at the pilots and ground controllers -- not only the typical technical failures, but also some unusual outside-world stuff ...
14 votes
0 answers
357 views

Have astronauts ever used the helmet-to-helmet technique to talk to one another in vacuum?

Science Fiction has long written about this communication technique in vacuum: Astronauts touch their helmet against another astronaut's helmet, so that sound will transmit through that physical ...
13 votes
0 answers
293 views

Does the SpaceX spacesuit address any of the criticisms of ACES raised by Columbia Crew Survival Investigation Report?

A brief history of what Shuttle crews wore for ascent and entry, from the Columbia Crew Survival Investigation Report: The shuttle was originally designed to be operated in a shirtsleeve (bare-hands) ...
13 votes
1 answer
383 views

Will Soyuz spacecraft be able to visit the Lunar Gateway?

I mean launch from Earth, dock to the gateway and come back.
13 votes
1 answer
346 views

What space capsule is this part from?

One of my relatives has this metal component sitting in their backyard. It was a souvenir that my grandfather got to keep from his days working in the aerospace industry (primarily for Boeing). My ...
11 votes
0 answers
166 views

Which kinds of survival equipment does Crew Dragon have, in case of an emergency landing?

Soyuz spacecraft has various survival equipment for different cases of emergency landing. The cases include water landing, desert landing, snow winter landing (crews have special winter suits). They ...
11 votes
0 answers
259 views

What could be strong arguments against Ingenuity following Perseverance at a safe distance when the flight test program has been a success?

This answer to the question "How long could the Mars helicopter Ingenuity keep up with the Perseverance rover if it wanted to?" reasons that indeed it could for years ! But according to the ...
11 votes
0 answers
224 views

Does Crew Dragon have a quick-release hatch?

After today's Crew Dragon launch was scrubbed, it took the pad ninjas at least ten minutes to open the hatch. One of the major criticisms of the Apollo Block 1 hatch design after the Apollo 1 fire ...
11 votes
0 answers
344 views

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

This answer describes a very interesting phenomenon of Plume Induced Flow Separation on Saturn V vehicle. (Apollo-6 S68-29737 photo, courtesy NASA) This is, basically, when "fire" from ...
10 votes
0 answers
166 views

Shuttle emergency landing location question

There are lists of airports identified as emergency landing locations, many on the east coast. Some are military, some are public airports. Has anyone ever seen procedures on how this would be ...

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