#NASAWebb sees in infrared light — or what we experience as heat. What can infrared vision tell us that visible light cannot?
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2. Due to cosmological redshift, light from the early universe stretches into longer infrared wavelengths as the universe itself expands. Since Webb will see in infrared, it can look ~13.5 billion years back in time at those first stars & galaxies. More: https://jwst.nasa.gov/content/science/firstLight.html …pic.twitter.com/GQIZeUO0MS
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More: 3: #NASAWebb’s unprecedented infrared sensitivity will help astronomers compare the faintest, earliest galaxies to today's grand spirals and ellipticals, helping us understand how galaxies assemble over billions of years.
More: https://jwst.nasa.gov/content/science/galaxies.html …pic.twitter.com/dfWJ1J1oYD
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4. How are the building blocks of planets assembled? Can we find a planet with an atmosphere like Earth’s? Many atoms & molecules in the atmospheres of exoplanets have the largest number of spectral features in the infrared part of the spectrum. More: https://jwst.nasa.gov/content/science/origins.html …pic.twitter.com/zTGtcxxWpn
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By studying the spectral features (aka spectra), we can learn all kinds of detailed characteristics about exoplanet atmospheres — including their composition, temperature and more!https://twitter.com/NASAWebb/status/1311357168948449281?s=20 …
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le misurazioni umane del tempo terrestre non sono in contraddizione con le misure astronomiche dell'Universo???????????
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