NASA’s James Webb Space Telescope has been promoted to look into the past and understand the origin of the universe. But how is that possible?
The NASA James Webb Space telescope It has changed the way we look at space. Since we saw its first images on July 12, the space telescope has fascinated us with its incredible, never-before-seen images. Recently, technology marvel It took the first ever clear picture of Neptune and showed off the wonderful rings surrounding it. Not only that, he showed us distant galaxies and star clusters in a way that scientists didn’t think was possible. It does this using two of its important devices called a near-infrared camera (NIRCam) and a medium-infrared (MIRI) machine. They take pictures at infrared wavelengths that are beyond the capabilities of human vision. But some scientists also believe that the telescope can peer into the past and tell us more about the origin of Universe. But how can she do that? Read on to find out.
The Webb Telescope captured an image of the oldest galaxy ever, which formed just 300 million years after the Big Bang. But how can you know that and see what things were like billions of years ago? The answer is simpler than you think. It’s because of how light works.
Talk to WebTelescope.org, NASA Scientists open“Telescopes can be time machines. Looking into space is like looking back in time. It sounds magical, but it’s actually very simple: light needs time to travel across vast distances of space to reach us.”
The logic is simple. Light travels very fast. The time between turning on the lights in your room and their glow seems instant. Or when you look at an object and all it takes is you to look at it to see it, the process is so fast and smooth we don’t consider that the light is actually transmitted. But the truth is, like everything else, light also has a finite speed. Its speed is approximately 300,000 km/s. And when we look at further distances, we begin to see how late the light reaches us. on me a landis not possible, but just a glimpse at Sun It is all you need to understand this. It takes 8 minutes for light rays from the sun to reach Earth. This means that after the point where you are standing on the face of the sun, you have to wait that much time for the first rays of light to get in. This also means One The most important thing. The rays of light you receive now were sent eight minutes ago and show you what the Sun looked like eight minutes ago.
Now, when you apply the same reasoning to things light years away, you know that the light you receive is one year late getting to us. This means that everything we are looking for happened one year ago. Now, all the telescope like NASA James Webb space telescope What you have to do is look far into the space and the pictures will be so far away in time.
Because JWST has larger mirrors than any space telescope, it is able to focus more light onto the lenses to capture an image. This is why scientists say the telescope can peek into the past to tell us we More on the origin of the universe.