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By Will Dunham WASHINGTON (Reuters) - It was a turning point in the history of life on Earth. An asteroid an estimated 6-9 miles (10-15 km) wide slammed into Mexico's Yucatan Peninsula 66 million years ago, triggering a global cataclysm that

By Will Dunham WASHINGTON (Reuters) - The planet known as HD 189733b, discovered in 2005, already had a reputation as a rather extreme place, a scorching hot gas giant a bit larger than Jupiter that is a striking cobalt blue color

By Will Dunham WASHINGTON (Reuters) - Hidden below the brownish ammonia clouds blanketing Jupiter are clouds that like on Earth are made of water. And like on Earth, lightning often is generated within these clouds - an eerie sight spotted by

The mission of China Dubbed Tianwen 4, it will include a larger spacecraft destined for Jupiter and a smaller spacecraft sent flying from distant Uranus. The pair will launch from a Long launch vehicle on March 5 and perform one flyby

China's Double Mission Defined Dubbed Tianwen 4, it will include a larger spacecraft destined for Jupiter and a smaller spacecraft sent flying from distant Uranus. The pair will launch from a Long launch vehicle on March 5 and perform one flyby