Visit my website at [ Ссылка ] -the Sofia Airborne Telescope mirror was cleaned recently using a very familiar cleaning agent. Please rate and comment, thanks!
Credits: NASA Dryden
![](https://i.ytimg.com/vi/r7qmTaeibsw/mqdefault.jpg)
Visit my website at [ Ссылка ] -the Sofia Airborne Telescope mirror was cleaned recently using a very familiar cleaning agent. Please rate and comment, thanks!
Credits: NASA Dryden