We still aren't doing science with the James Webb telescope...but NASA is already thinking about the next space telescope.
And it's going to be a fluid beast. In the near future, astronauts on the ISS will do a test of a liquid mirror. Turns out that in microgravity you can make a water droplet very, very large indeed. (This is why if liquids escape on the space station they produce big spheres).
The experiment will test the feasibility...and these liquid lenses could be ten, even 100 times the size of Webb's mirrors...and give us an even better view of the universe.
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