In an order issued Wednesday, the National Park Service imposed “a temporary closure of Dupont Circle Park from approximately ...

How far away it is: 93 million miles (150 million km) ...

The nights surrounding June 7 will see Jupiter and Mercury crowd together close to the horizon in the northwestern sky. Stargazers in the U.S. will need a clear horizon to spot the planetary duo ...

WEARING white as a wedding guest used to be a cardinal sin and the ultimate insult to the bride. But nowadays there’s a far ...

Earth’s tilt is what causes the seasons; in the summer, when our planet’s pole is tipped toward the sun, the days are longer, ...