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Leongsam said:
Telescope comparisons
Click to expand...

oi... how can hubble's operating temp be 20 degrees C?

On another note, it would be amazing if it could catch the 1st stars after the big bang...
 
nightsafari said:
oi... how can hubble's operating temp be 20 degrees C?

On another note, it would be amazing if it could catch the 1st stars after the big bang...
Click to expand...
I was told just after tge big bang, during the initial phase, the matter were travelling faster than light fir a certain period.
 
nightsafari said:
oi... how can hubble's operating temp be 20 degrees C?

On another note, it would be amazing if it could catch the 1st stars after the big bang...
Click to expand...

Hubble is warmed by the sun.
 
Good explanation of what L2 orbit means.

 
JWST is now orbiting around an invisible point in space known as an Earth-Sun Lagrange point. It’s a somewhat mystical area of space where the gravity and centripetal forces of the Sun and the Earth are just right, allowing objects to remain in a relatively “stable” position. “There’s a little tug of war going on where [gravity] balances out perfectly,” Jean-Paul Pinaud, the ground operations delta-V lead at Northrop Grumman, the primary contractor of JWST, tells The Verge. “So nobody wins that tug of war.”



I wonder where the Earth Sun Lagrange point is.
 
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