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NASA's James Webb Telescope

Image Credit: NASA/MSFC/David Higginbotham

The James Webb Telescope

by Aneri Shethji

On Dec. 25, 2021, the James Webb Telescope was launched into space. The James Webb Space Telescope is the biggest, most powerful telescope yet created in space. It will enable researchers to examine the condition of the cosmos 200 million years after the Big Bang – the event that led to the creation of the universe. Some of the very earliest galaxies to develop will be seen in photographs taken by the telescope. Additionally, it will be able to view objects in our solar system beyond Mars and see into dust clouds to determine where new planets and stars are developing. On July 12, 2022, the first highly anticipated images of outer space captured by the telescope were released by NASA. These images were the deepest infrared images of the universe that have ever been taken.

The telescope itself is very tall – about the size of a 3-story building! It works like any other telescope. Curved mirrors are used to collect light from the night sky. Light is focused by a telescope’s mirror or lens’ shape. When we gaze through a telescope, that focused light is what we see. The James Webb works in the same way, but it has 18 smaller mirrors that can unfold to create one huge mirror, and this enables it to capture even more details than ever before!

What excites scientists about the James Webb is that it can detect infrared light. Infrared light cannot be seen by the human eye, but it can be felt in the form of heat. When you touch a hot cup of coffee, you can feel the heat, and that heat is infrared light. While we cannot see infrared light, the James Webb Telescope can! The mirrors on the telescope are plated with a thin layer of gold, helping them reflect as much infrared light as possible to be detected. Being able to detect this light is important because we can then see through clouds of dust. Many planets and stars form inside these dust clouds, so scientists can determine where new space objects are forming.

There are already new discoveries being made only months after the release of images taken by the telescope. We can expect to see many more in the future! If you’re interested in the process of receiving mind-blowing pictures from the James Webb, check out NASA’s timeline opens in a new window! You can click through the different stages and learn about all the technologies and systems that led to this remarkable feat.

Source:

“Mission & Launch Quick Facts.” WebbTelescope.org
https://webbtelescope.org/quick-facts/mission-launch-quick-facts opens in a new window.

“Webb Space Telescope GSFC/NASA.” NASA, NASA
https://webb.nasa.gov/ opens in a new window.

“Where Is Webb? NASA/Webb.” NASA, NASA
https://jwst.nasa.gov/content/webbLaunch/whereIsWebb.html opens in a new window
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Scientific Peer Review by Alysia Mandato

Aneri Shethji:

Aneri Shethji is a 10th grader at North Allegheny Intermediate High School. She is very passionate about science and writing and enjoys getting involved with the community. In her free time, Aneri spends time with friends and family and loves getting outside. She can’t wait to learn more about all that science has to offer, and help others learn it too!

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