While all seven planets could appear in some form in parts of the U.S., not all of them will be visible to the naked eye. Here's what to know.

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

"They all orbit the sun, like racers on a track and every now and again, we're in a vantage point where the Earth is turned ...

The evening planets are much easier to see: Always bright and reliable Jupiter ... of 27 degrees west of the sun — farther than on any other date this year — Mercury still stays low and ...

The best time to view the parade is shortly after sunset, between 6:30 and 7:30 p.m. Mercury and Jupiter will drop below the horizon after 7 p.m., but the other planets will still be visible.

"Most people have never in their lives seen the planet Mercury because it's so close to the sun, it's very difficult to see," McCarthy said. "There are only a few time a year or every other year ...

We see a planet like Jupiter because its light—which like the other planets and the Moon originates on the Sun—takes about 43 minutes to reach Jupiter. The return trip to the Earth can take ...

planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth. Our planet is just the right distance from the ...

Planets don't get much more iconic than Saturn. But if you managed to see it through a backyard telescope right now, you wouldn't see its rings.