A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...
Hecatomnus’ tomb, Milas, Turkey Marble statues from the Mausoleum at Halicarnassus The Mausoleum at Halicarnassus, the massive tomb built for Mausolus, governor of the southwestern Anatolian province ...
The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...
Longyearbyen, Norway, and Ushuaia, Argentina, offer travelers the opportunity to see unspoiled landscapes, rare wildlife, and vast glacial ice—along with a spirit of endurance and camaraderie.
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