 Pluto is at its best now. It's lining up opposite the Sun. It rises around sunset and is in the sky all night. It's brightest for the year as well. Don't bother looking for it, though, unless you have a good-sized telescope. Clyde Tombaugh was using a good-sized telescope when he discovered Pluto in 1930. He'd been searching for a possible planet beyond Neptune for about a year from Lowell Observatory in Arizona.