Questions tagged [life]

Questions regarding living organisms, searches for life, or human life in space.

12 questions with no upvoted or accepted answers
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Could there be liquid hydrogen oceans on the surfaces of worlds (including frozen gas giants) in the distant Kuiper belt or Oort cloud?

This is something I'm wondering for a science book I'm writing (not science fiction) where I cover the various forms of life that could exist especially in our solar system - such as life on Mars of ...
6
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58 views

Has biological pressurization ever been used in spacecraft or in experimental applications?

I love kimchi and I love space exploration, so I was doing some research about whether and how fermented foods such as kimchi might have been consumed in space. For those who haven't tried it, kimchi ...
3
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0answers
75 views

Do dust bunnies form normally in microgravity?

On Earth, dust, hair, and other assorted debris clump up into fuzzy lumps known as dust bunnies, which shelter parasites, set off allergies, clog air filters, and impede electronic-device cooling. In ...
3
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80 views

What are the challenges in terraforming a portion of Mars as opposed to the entire planet?

To be clear, I'm not talking about creating human-livable conditions, just the minimum required to support microbial life and possibly begin the process of creating an environment to support more ...
3
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0answers
58 views

Why would TALISE be directed to the shore of Ligeia Mare?

TALISE (Titan Lake In-situ Sampling Propelled Explorer) is a proposed automated boat that would float in a lake called Ligeia Mare on Saturn's moon Titan. I saw an article that said once it touches ...
2
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36 views

Avoiding Martian contamination with Earth microbes

Unmanned probes can be sterilized, but when humans begin occupying Mars in large quantities, how can contamination of possible Martian microbes with Earth microbes be avoided?
2
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164 views

Why were only three known-negative soil samples used to determine the Viking labeled release experiments' false positive rate?

According to Levin, Gilbert V., and Patricia Ann Straat. "The case for extant life on Mars and its possible detection by the Viking labeled release experiment." Astrobiology 16.10 (2016): ...
2
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94 views

Have we looked in the right place for life on Mars?

I know it's (extremely) unlikely there is (& perhaps ever was) any life on Mars but having had a glance through the missions I can find I can't help thinking we've not really looked in the best ...
2
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75 views

Would there be value in taking tardigrades on a Lunar mission?

China's Chang'e 4 mission recently initiated biological experiments on our moon. There's value in performing those experiments, of course. Now, I'd be curious to see how tardigrades do in the long ...
2
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76 views

Mars drill depth to discover Life

Curiosity has shown that Mars used to have persistent liquid water on the surface. (~3+ billion years ago.) IF life was around at that time, at what depth would we expect to find it? Without plate ...
2
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162 views

How does the recent discovery of "microbes living 2,400m beneath the seabed off Japan" impact the search for life in our solar system?

A recent BBC news article reports on finding microbes living 2,400m beneath the seabed off Japan The team found that microbes, despite having no light, no oxygen, barely any water and very limited ...
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What reasons are there (other than oxygen) Tardigrades can't survive Mars?

If Cyanobacteria or Lichens can survive on Mars could other small organisms like the Tardigrade then survive & flourish among them? Due to the thicker atmosphere to be found the bottom of the ...