How they made the James Webb telescope

[MissMoppet]

Hope you all saw the BBC2 programme tonight on how they designed and launched the new James Webb telescope. Incredible engineering. One tiny part could have failed to work and 30 year's effort, eight billion dollars and millions of man hours would have been wasted.

Yet nobody's designed a fool-proof rear seat catch for our Rover 75s.

[solarsailor]

I thoroughly enjoyed watching it. I had no idea that it was parked 1.5 million km away - 4 times farther than the moon - and orbits the sun rather than Earth. I'd assumed it was (relatively) close by like Hubble.

[roverbarmy]

Absolutely mind blowing in so many ways. The funding makes you cringe!

................... and don't forget to remove the lens cap!!!

[MSS]

Here's a good animation of its orbit.

https://webb.nasa.gov/content/about/orbit.html

[MissMoppet]

Originally Posted by MSS

Here's a good animation of its orbit.

https://webb.nasa.gov/content/about/orbit.html

Thanks for that but how on earth did an 18th century mathematician - without the benefit of any computer - work out "the “three-body problem.” "That there is any stable configuration, in which three bodies could orbit each other, yet stay in the same position relative to each other? At Lagrange points, the gravitational pull of two large masses precisely equals the centripetal force required for a small object to move with them."

Learn summat every day.

[Phil th Barrow]

I was amazed at what foto shop could do...

[grivas]

Originally Posted by MissMoppet

Hope you all saw the BBC2 programme tonight on how they designed and launched the new James Webb telescope. Incredible engineering. One tiny part could have failed to work and 30 year's effort, eight billion dollars and millions of man hours would have been wasted.

Yet nobody's designed a fool-proof rear seat catch for our Rover 75s.

Yet another example of man's wrong priority. All that effort and money so we can take photos of the universe, yet the same effort and money could have been been put to use in providing quality medical and dental care to a fifth of Americans who are denied access to both because they are too poor.
Other than that all good, impressive even, James Webb would be proud.

[Number 6]

Originally Posted by grivas

Yet another example of man's wrong priority. All that effort and money so we can take photos of the universe, yet the same effort and money could have been been put to use in providing quality medical and dental care to a fifth of Americans who are denied access to both because they are too poor.
Other than that all good, impressive even, James Webb would be proud.

And they cant find a cure for the "Common Cold" or "Cancer" Well they could But here would be no profit in it,,, The Profit is in the supply of the medication..

[iwanta260]

If they can see stars 15 billion light years away, and the universe is 15 billion years old, and given that nothing can exceed the speed of light, how can we see it?
If a star is 15 billion light years away, then it must be travelling away from us at light speed for 15 billion years to get there, and it you turn 180 degrees, low and behold, there is another star 15 billion light years away from us, was planet earth the centre of the big bang? Did these stars suddenly stop, just so we could get a shot from another white elephant? Most astronomers are a fraud, as is particle physics, someone writes a paper in order to get funding, produces meaningless 'recreations' to keep the plebs happy, and everyone get paid. There is a simple premise in particle physics 'by viewing an experiment, it changes the outcome of the experiment.', or if you look for unicorns, you will find them.
My paper remains unchallenged, star gazers and theoretical physicists are, for the most part, finance seeking frauds!!


rant over

[dattrike]

This is so true