Fast, mysterious clouds swarm around our galaxy
Astronomers want to know the source — and importance — of these faint, fast-moving clouds that zoom beyond and toward our Milky Way’s disk.
Astronomers want to know the source — and importance — of these faint, fast-moving clouds that zoom beyond and toward our Milky Way’s disk.
Based on the Greek words for theft and hair, kleptotrichy is a more common bird behavior than people thought.
Sensor data reveal greater noctule bats chasing, catching and chewing on birds during nighttime hunts.
Humans need 13 different vitamins to stay healthy. Most come from the food we eat. Others are made in our bodies.
A range of tricks pitchers use to get curve all come down to the thin layers of air next to the ball — and how a ball’s spin and seams affect them.