The answer to these questions and other information on this planet can be found in the cache container.
Originally placed by wheezer & Rockbiter, What if... was a multi-cache of nine different containers, each representing one of the planets (Pluto was still in good standing at the time). In the ten years that it lasted 29 cachers were able to say that they completed the series. A misunderstanding led to this cache being prematurely archived.
Reluctant to let the unique aspects of this cache fade into distant memory, it has been resurrected with wheezer & Rockbiter's encouragement. Instead of being a multi-cache with one smiley being awarded upon completion, it is now a series of nine traditional caches (Pluto is still out there as it was in the original series).
While the series can be found in any order, extra geocache brownie points will be awarded to those who find the caches in proper sequence, from Mercury through to Pluto.
All of the containers are original (except for Neptune) and in their original locations placed by wheezer & Rockbiter, except for Venus which was relocated to afford it more protection from accidental discovery.
The other caches in this series are–
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Neptune
Pluto