On May 29, 1919, a total solar eclipse helped to prove Albert Einstein's theory of general relativity. Einstein's theory ...

Mare Crisium, or the 'Sea of Crises', can be spotted on the night of May 30 as an oval-shaped dark patch on the moon's ...

It is time once again to head to your nearest crosstown view for New York City’s best annual sunsets, if the weather ...

Using a newly developed adaptive optics system called Cona, scientists peered through Earth's turbulent air to reveal the sun ...