The first full-color pictures from NASA's new telescope were released this week.
The telescope makes discoveries in deep space. The Hubble Space Telescope was 100 times weaker. The view of stars, galaxies, and other objects that were invisible to previous observatories can be seen with the help of the JWST's cameras.
Aayush Saxena, an astronomer at University College London, said that the first thing that everyone did was compare Hubble.
He said it was mind-blowing.
The four pictures released this week by JWST reveal what is in them.
Hubble was able to take pictures of deep space, but it was not able to take pictures in theIR. The instruments were mainly used to pick up light.
Light that is closer to the red side of the color spectrum is called red- shifting.
The universe is moving very fast. When it's approaching us, the sound gets louder, but then as it moves away, the sound wavelength gets longer and longer.
The light is stretched and redshifted in the same manner.
While visible light is absorbed by space dust that blocks them from view, IR light can cut through dust.
This is why instruments like the mid- and near-infrared cameras are so useful.
There are cliff-like formations of gas and dust on the edge of the Carina Nebula, which is 7,600 light years away from Earth.
Gas and dust fall into new stars in clouds. Astronomers call nebulas "stellar nurseries." It can pierce through the dust and see the baby stars.
I don't think we would be able to witness the birth of new stars if it weren't for MIri and NIRCAM.
The outer gas layers of a cluster of massive stars are ejected when they go supernova. The material can be pulled back together by gravity. The process that created everything in our world is being captured.
Multiple generations of stars forming and dying have resulted in the formation of all of the chemical elements. The elements that made up the first generation of stars were hydrogen and helium.
It's kind of true that we are all made of star stuff.
There is a second star at the center of the Southern Ring.
This had been speculated but never observed.
The red dot next to the blue-white star was revealed by IR. The red star is dying and sending out waves of gas and dust that create a ring around it.
Since we are looking at it from the side, we were surprised to see a galaxy in the background.
"You can see the spiral structure and a little bulge in the middle, which is a tell sign that this is actually a galaxy," he said.
Stephan's quintet is a group of five galaxies that are interacting with each other. The fifth is close to 40 million light-years away.
"You can see that the level of detail that we uncovered is so much higher compared to the ultraviolet and optical, because these are all potentially star-forming regions that are obscured by dust," he said.
He said that the left side of the universe offers an insight into how stars form.
The individual clumps can be picked out.
He said that this helps to quantify how many stars exist in the universe and how many are being formed.
As they move through space, the galaxies pull on each other. There is dust and gas between the galaxies.
"I think they've had a close encounter at some point in the past, which is why there's some sort of material flowing between these two," he said.
There is ionized gas in the vicinity of the galaxies. The gas can become very hot and ionized when a galaxy goes through it.
The gas cloud is a sign that the galaxies are merging.
There are more wonders in the background of the image.
"Wherever you look, you can see the beautiful spiral arms and the bulge," he said.
The cluster of galaxies is 4.24 billion light years away.
The cluster allows us to see distant galaxies.
It's similar to looking through a wineglass. If you see something through the bottom of the wine glass, it appears ring-like and stretched, which is called lensing.
In the image below, you can see that the pull from the cluster of galaxies is so strong that it stretches light from behind it.
The smallest red dots in the picture are the most interesting for Saxena.
The redder and smaller its light will be if it is farther away. One of the oldest galaxies ever seen is the red dot.
More and more red dots will appear once you raise the contrast. One of them might end up being one of the most distant galaxies that you can find.
Business Insider has an article on it.