Choose from options: Determine if the sentence is true based on the text below:
Cassini has yet to leave earth orbit.

NASA's Saturn exploration spacecraft, Cassini , has discovered an atmosphere about the moon Enceladus . This is the first such discovery by Cassini, other than Titan , of the presence of an atmosphere around a Saturn moon.
Select from the following. 1. Yes. 2. It's impossible to say. 3. No.
3.