Extraterrestrial landers sent to gather samples from the surface of distant moons and planets have limited time and battery ...
Some 50,000 people visit St. Peter’s Basilica in Vatican City daily. The 500-year-old structure, with its 448-foot-high dome, ...
Scientists have created the first-ever 3D maps of star-forming molecular clouds near the Milky Way's supermassive black hole, ...
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