The Webb telescope has been in the news a lot lately. I haven't paid much attention to it till I watched an episode of NOVA about it. This telescope is a big deal and hopefully it will be around for a long time. It was originally supposed to have been launched back in 2007 but cost over-runs and other problems set it back 15 years.
It is the size of a small house and has 18 mirrors coated with gold (just 2oz for the whole 18 mirrors).
After just one month it has traveled one million miles. The pictures it is sending back are how these planets and stars looked millions and billions of years ago due to the distance they are from us and the time it takes for their light/reflection to reach us.
This article reminds us that if our sun, which is 93 million miles away, were to suddenly burn out, we wouldn't know it till 8 minutes later. Light travels @ 186,000 miles a second x 60 seconds to make a minute x 8 minutes = lights out.
The planets, solar systems and star pictures the telescope is sending back determines that they are millions and billions of years of age due to the time it takes the light/reflection to travel. In other words the pictures we see today are how these planets looked long ago, not how they look at present.
I think the purpose of the telescope is to see what is out there more so than to look for alien life since life wise, a lot can happen over millions and billions of years.
Interesting to me at least.
https://www.dailymail.co.uk/sciencet...pe-photos.html
It is the size of a small house and has 18 mirrors coated with gold (just 2oz for the whole 18 mirrors).
After just one month it has traveled one million miles. The pictures it is sending back are how these planets and stars looked millions and billions of years ago due to the distance they are from us and the time it takes for their light/reflection to reach us.
This article reminds us that if our sun, which is 93 million miles away, were to suddenly burn out, we wouldn't know it till 8 minutes later. Light travels @ 186,000 miles a second x 60 seconds to make a minute x 8 minutes = lights out.
The planets, solar systems and star pictures the telescope is sending back determines that they are millions and billions of years of age due to the time it takes the light/reflection to travel. In other words the pictures we see today are how these planets looked long ago, not how they look at present.
I think the purpose of the telescope is to see what is out there more so than to look for alien life since life wise, a lot can happen over millions and billions of years.
Interesting to me at least.
https://www.dailymail.co.uk/sciencet...pe-photos.html

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