When I was involved with our Astronomy club I managed to see all the planets and Pluto was still a planet back then. One of the members has a 21 inch mirror telescope and lives in a very dark area. Mercury was just next to the sun, and a challenge to see. The rest of the inner planets are a cinch to see but Neptune and Pluto are a challenge. Just a faint blob is all we saw.
Earth is the easiest one to see, just look down.
