A camera affixed to the International Space Station recently spotted some curious symbols amid a barren desert landscape.

Pope Francis decried the numerous conflicts plaguing the planet and appealed to world leaders “not to yield to the logic of fear” in his Easter message urbi et orbi (“to the city and to the world”) on ...

Urbi et orbi” means “To the city [of Rome] and to the world.” It is a special apostolic blessing given by the pope every year ...

The Milky Way, our home galaxy, is part of a different supercluster called Laniakea, which, at 500 million light-years wide, ...