James Webb Telescope A Question.

Dunno man, ahh thanks Gortex.

a reply to: Flyingclaydisk

During the first cycle of work, the telescope will study near-Earth objects, large asteroids, planets of the solar system, comets, trans-Neptunian objects, exoplanets - a total of 2,100 observations are expected to be made.
Since, as a rule, scientists from different countries participate in astronomical research, the objects of observation were grouped by topics. In total, there were several dozen of them, and it is not possible to list them all, so I will name only a few. James Webb will study the three largest low-albedo asteroids, Trojan asteroids (including the targets of the future NASA Lucy mission), trans-Neptunian objects, Kuiper belt objects, red and brown dwarfs. The telescope will examine the Great Red Spot of Jupiter, the vortex at the south pole of Neptune, the satellites of Saturn, the atmosphere of the planet itself, Uranus and Titan. As well as exoplanets, including the recently discovered TRAPPIST-1 e, protostars, protoplanets, supernovae, comets, quasars, and distant galaxies.a reply to: alldaylong

It will look at a wide variety of targets -- objects in our own solar system, other starts, exoplanet atmospheres, etc. But one of Webb's specialty will be ultra far-away objects (billions of LY away).

That's because the light from those objects, possibly some of the earliest galaxies that formed when the universe was young, has been highly red-shifted since that light left those objects. The red-shifting of distant galaxies occurs because as the universe expands, the wavelengths of light from those distant galaxies appear to be stretched out by the time it gets to us/Webb. longer wavelengths = light shifted toward (and past) the red. The wavelengths are so long that they are no longer in the visible part of the spectrum, but rather the infrared.

Webb is designed to see this infrared light. And the infrared light from the far-away galaxies that Webb will be seeing started off billions as years ago as visible light -- before it was stretched.

So if you want to see what a distant red-shifted galaxy looked like in visible light billions of years ago, you need to look in the mid-infrared like Webb does.