Questions tagged [contamination]

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Lunar contamination by tardigrades [duplicate]

According to this tweet the recent crash of Beresheet on the Moon could have spread tardigrades on the Moon surface. Isn't this a violation of the agreement on preventing contamination of outer ...
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Why would the Apollo Lunar Module pressure dump (to space?) valve have a bacterial filter?

This answer to Why did they bother closing the hatch on the LM while doing EVA? links to a transcript of Apollo 11 which contains the following (find it there by searching for "radiative"): 109:41:...
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How are electrical connectors on the ISS protected from humidity and contaminants?

Early concepts of Apollo had a single computer that was to be unplugged and moved between the CM and LM. This idea was soon abandoned because of contaminant buildup in the connectors: Electrical ...
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Are Peace Vallis and it's alluvial fan on Mars classified as special regions or not?

According to the answer for this question, that was not accepted, alluvial fans might have water and thus a IVc category mission would be required to visit such an area. Curiosity meets only the IVa ...
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129 views

Do you have to build your own satellite in sterile conditions?

If you were to build your own satellite (say, like a CubeSat), is it required to build it in sterile conditions? The satellite would never reach another planet/the Moon so I wouldn't have thought that ...
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Probable future tech to sterilize an EVA suit as it is being worn

As far as I've been able to find (please correct me if I am wrong!), there is no current technology that would permit an EVA suit that is being worn to be sterilized without risk of damage to the suit ...
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2answers
225 views

Could a biohazard sample return capsule from Mars be safely hard landed on Earth?

There are some planetary protection concerns about backward contamination of Earth by returning samples from Mars, a mission which may well happen around the Earth-Mars opposition of 2025. One of the ...
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1answer
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How plans for Mars colonization comply with Planetary protection act?

The existence of extraterrestrial life or proto-life organic evolution in isolated environment of Mars is question of ontological magnitude. Mars is probably the only place in solar system where ...
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256 views

How are ultra-sensitive aerogel suspended samples secured for Earth reentry and touchdown?

For example, how were the Stardust particle collector samples, that were suspended in brittle and extremely low density (0.014 g/cm3) silica aerogel, secured prior to atmospheric reentry so they ...
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Sending trash into space

What would be the positive and negative affects of using other planets and/or space itself for storing trash - instead of wasting place for that on Earth? Also, what are the possible obstacles of ...
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Is 'Mars One' a one-way mission for fear of infecting Earth with unknown pathogens?

Will the Mars One mission team be testing samples to know for sure that there are no deadly viruses on Mars? If there are no viruses, will this pave the way for Mars travel? What would be the ...