Who am I? I was 1st viewed in 1610 by Galileo.|Mars|T=Jupiter|Venus|Pluto|Neptune|Earth
I was first visited by Pioneer 10 in 1973.|Mars|T=Jupiter|Venus|Pluto|Neptune|Earth
I am the 5th planet from the sun|Mars|T=Jupiter|Venus|Pluto|Neptune|Earth
I am the largest planet in the solar system.|Mars|T=Jupiter|Venus|Pluto|Neptune|Earth
