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 ...

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 ...

Following Saturn is Venus, rising in New York at 2:51 a.m. on July 25. Venus is in Taurus, and so bright that it is immediately identifiable; it will look like the brightest "star" in the sky. By ...

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, stars and Perseid meteor shower.

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 45-year-old former world No 1 embraces the challenge and joy of tennis after a tough year of health struggles.

Venus Williams will make her return from a 16-month layoff at this week's DC Open, the seven-time Grand Slam singles champion ...

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