Which is the smallest planet in the Solar System?

What is the SETI project searching for?

Which planet did the Pathfinder and Curiousity missions explore?

Which man-made object is furthest from Earth?

How long (to the nearest 20 seconds) does light take to reach Earth from the Sun?

After the Challenger disaster a replacement shuttle was built, called what?

Who was the third member of the Apollo 11 mission, alongside Neil Armstrong and Buzz Aldrin?

Which country reached Mars in 2014 with a mission that cost less than making the film Gravvity?

55 shuttle missions landed at Edwards Air Force Base.  Which state is that in?

Alan Shepherd, Virgil Grissom, John Glenn, Scott Carpenter, Walter Schirra and Gordon Cooper were the first 6 Americans in space.  Why is Walter the odd one out?