Calling all history buffs! Step back in time at one of these significant sites in each state, from Revolutionary War ...

Beyond the vintage diners and roadside kitsch, Route 66 passes stunning natural attractions from Missouri caves to Arizona ...

One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...

A tourist visiting Cathedral Rock southwest of Sedona city limits captured video of a group of four young men vandalizing the ...

Memorial Day weekend is the perfect time for a quick Arizona road trip. Here are the best things to do in Jerome, Flagstaff, ...

Legendary actor William Shatner wants President Trump to restore Pluto to greatness as scientists claim to have found a “new” ...

On Tuesday, May 13, the Sedona City Council formally crowned Poet Laureate Gary Every and Youth Poet Laureate Anya Blue Lior.

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our solar system.

The Lowell Observatory—famous as the site of Pluto's discovery—now features an open-air planetarium, where visitors can get live commentary on that night's sky from the comfort of heated seats." ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short life of what was, for a single human lifetime, the solar system's smallest ...