I always wondered... can astronauts "swim" in air while on microgravity?
Rooms are always quite tiny so you can always grab something to move without any problems, but if you were in a bigger module and you had nothing at your reach to grab, could you push air as you push water when swimming to be able to move?

Probably launching an object or maybe even blowing air could generate more "thrust" than swimming, but I wonder if there have been any study about it!

I always wondered... can astronauts "swim" in air while on microgravity?
Rooms are always quite tiny so you can always grab something to move without any problems, but if you were in a bigger module and you had nothing at your reach to grab, could you push air as you push water when swimming to be able to move?

Probably launching an object or maybe even blowing air could generate more "thrust" than swimming, but I wonder if there have been any study about it!

I'm no physicist or expert, but given that air is a fluid just as water is, I'd go with yes. Albeit slowly.

Absolutely. Birds do it so well that they can even do it in normal gravity. It's just that humans aren't built to do it well without aid like special clothes.

Is this a big discovery? And is this exoplanet in Space Engine?

https://weather.com/science/space/news/2025-04-17-study-webb-telescope-detects-signs-of-life-on-distant-planet?cm_ven=hp-slot-3

Sign Of Life On Another Planet? Webb Space Telescope Detects What Scientists Say Is The Strongest Evidence Yet
A new study suggests we could be a step closer to figuring out if alien life is out there, trillions of miles away from Earth. It’s based on observations recorded by the James Webb Space Telescope of an exoplanet called K2-18 b.
https://iopscience.iop.org/article/10.3847/2041-8213/adc1c8
NASA’s James Webb Space Telescope may have provided scientists with the strongest evidence yet of potential life on a planet beyond our solar system. In a new study published Wednesday in The Astrophysical Journal Letters, a team from the University of Cambridge’s Institute of Astronomy shared what they found.
124 light-years away on a planet named K2-18 b, the Webb telescope observed a “tentative hint,” or you might say traces of two gases, dimethyl sulfide (DMS) and dimethyl disulfide (DMDS). On Earth those gases are only created by living organisms, mainly marine microbes like phytoplankton or algae.
Scientists consider K2-18 b to be part of what they call hycean worlds, planets that could be entirely covered by oceans. The planet also orbits a red dwarf star that’s smaller than our sun, and it’s in what’s considered a “habitable zone,” a region where liquid water could exist on a planet’s surface.
Researchers believe that could mean the exoplanet is brimming with microbial life. The lead author of the study, Professor Nikku Madhusudhan told Reuters, "That is a major breakthrough in our search for life beyond the solar system. Not only that there is a chance that the planet can actually be habitable, but what we are finding is that we are demonstrating that it is possible to detect bio-signatures around in atmospheres of such planets around nearby stars with existing facilities. And that's a big breakthrough,”
 

While this discovery is being described as a “paradigm shift in our search for life” Madhusudhan said we still must proceed with caution, "This is a monumental discovery. It is very important but we also have to be extremely cautious. The reason is that this is one of the biggest questions we have asked as a species in all of science, and we have to deal with it very carefully in that we want it to be really, really robust in establishing whether this is actually life that we have seen."