New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once ...

For centuries, we’ve been fascinated by the Sun, the fiery heart of our Solar System. But what does the Sun truly look like?

Venus Williams wanted to send a message — to herself and to others — about competing in a sport at age 45, about never giving ...

Venus Williams, 45, and model Andrea Preti, 37, are engaged, the tennis phenom confirmed after winning her first singles ...

In this edition of WTOP’s monthly space feature, “What’s up in the sky?” Greg Redfern tells you how to see the moon, planets, ...

SportsLine tennis expert Blake Von Hagen reveals his 2025 Mubadala Citi DC Open picks for Tuesday's women's first-round match ...

After its voyage past Mars, Mariner 4 maintained intermittent communication with JPL and returned data about the ...

Look east around 4 a.m. local time, just before dawn, to see the slender form of the crescent moon climb above the horizon.

Mariner 4, built by JPL in Pasadena, took the images on July 14, 1965. One of the mission's leaders reflects on decades of studying the Red Planet.

The tennis superstar confirmed her beau, actor Andrea Preti, had popped the question during a post-match interview following her return to the sport after a yearlong hiatus.

Venus Williams confirms engagement to actor Andrea Preti, with a reported romantic Amalfi Coast wedding set for September.

The New Orleans Saints lost not one, but two players to retirement this Tuesday. All-Pro safety Tyrann Mathieu announced on ...