In Jessica Dickey's play "Searching for Galileo's Daughter," an American writer goes to Florence in Italy to study the ...

Ranger 9, the last spacecraft in the Ranger series, was launched on March 21, 1965, and impacted the Moon on March 24, ...

On Oct. 1, 1847, at age 29, Maria Mitchell, a studious and sturdy Quaker who, as a child, began sweeping the sky above ...

Evidence from the lunar maria (dark, flat areas on the moon filled with solidified lava) suggested that the moon experienced significant compression in its distant past. Researchers suspected that ...