Dark matter
Dark matter is thought to play an important role in the struycture of the universe, accounting for five times the mass of normal, baryonic matter such as atoms and particles. Considered to be the scaffolding for the Universe, we’re only able to observe dark matter indirectly by measuring how its gravity affects stars and galaxies.
The JWST won’t be able to see dark matter, but it will employ gravitational lensing techniques to study the most distant galaxies and look at their rotation for signs that dark matter is at play.
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James Webb Space Telescope: How does it work and what will it see?
sciencefocus.com
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