Something strange is happening in the night sky tonight—the Moon is climbing higher than usual, reaching one of its most ...

Mars will appear to make an ultraclose approach to the moon on Sunday, after Jupiter had a turn earlier this week. Here's how ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...

This week, NASA released the first image from the Europa Clipper spacecraft's voyage. The image is a mosaic of a star field, created from three shots the solar-powered orbiter captured in December of ...

Observation of Animal Behavior Indigenous tribes around the world have mastered the art of observing animal behavior to ...