- #1
pixel01
- 688
- 1
Hi all,
I have read this article about Saturn rings:
http://www.space.com/news/ap-071213-saturn-ringage.html
The author argues as:
Quotes:
"The notion that Saturn's rings may be a permanent feature was based on observations by the ultraviolet spectrograph instrument on Cassini, which viewed the light reflected from the rings and watched stars passing behind them".
In fact I could not understand why for that reasons, they can say the rings are as old.
Thanks for any help.
I have read this article about Saturn rings:
http://www.space.com/news/ap-071213-saturn-ringage.html
The author argues as:
Quotes:
"The notion that Saturn's rings may be a permanent feature was based on observations by the ultraviolet spectrograph instrument on Cassini, which viewed the light reflected from the rings and watched stars passing behind them".
In fact I could not understand why for that reasons, they can say the rings are as old.
Thanks for any help.