The Hubble Telescope is 25 years old

[Uncle Jesse]

A remarkable piece of technology that we have grown used to having images beamed to us from has grown old. It happens to the best of us>
http://www.abc.net.au/btn/story/s4226617.htm

[Ed_D]

Remember that the Hubble was developed from the KH (Key Hole) spy satellites, and not even the latest one of the time. That's something to keep in mind if you get the urge to sunbathe nekkid...

Ed, who probably breaks spy satellites as well as cameras

[Uncle Jesse]

Ed, they wrote a song about people like us skinny dipping. https://youtu.be/rX28RySkENM

[Silver Creek]

The mirror on Hubble had to be so smooth that it was the equivalent of the surface of the earth having no bumps more than 6 inches high ---> smooth to 1/800,000 of an inch.

http://hubblesite.org/the_telescope/..._bolts/optics/

[Uncle Jesse]

The mirror on Hubble had to be so smooth that it was the equivalent of the surface of the earth having no bumps more than 6 inches high ---> smooth to 1/800,000 of an inch.

http://hubblesite.org/the_telescope/..._bolts/optics/

1/800,000 of an inch maybe more difficult to understand than a number like trillion. How do you measure that?

[hungNtree]

1/800,000 of an inch maybe more difficult to understand than a number like trillion. How do you measure that?

Real little ruler?