WARNING! WARNING! WARNING!
If you have not been certified by NASA as an Astronomer please proceed to the following page to take the NASA Astronomer Training Test!
Welcome NASA Certified Astronomers! NASA needs your help!
NASA has discovered that one of the planets has disappeared from the Solar System. Just as they were about to find out which one was missing all of the NASA telescopes shut down! No one at NASA can locate the planet without a telescope. This is where NASA needs your help. Since you have been recently certified as a NASA Astronomer you should have some knowledge about the Solar System and it's planets. Use the clues listed below to determine which planet has disappeared. Once you know the answer, record it in the Top Secret file and get it to NASA immediately so they can radio the information up to the NASA Spaceship and begin looking for the planet!
Clues to the Missing Planet