Because Pluto is so dim, you need a telescope to see it. “A backyard telescope could do it under the right conditions,” says ...

Early observations of the planets revealed worlds far different from Earth, demonstrating that the universe was far more ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

It's expected the team on Earth will get its first look at photos and information later today and Wednesday since information from New Horizons takes 4.5 hours to reach Earth.