In the distant past, the solar system was rife with impacts and collisions. Millions of rocky objects zoomed chaotically ...

"The range of possible outcomes is a lot wider than anybody has appreciated until now." ...

A radio pulsar is like a cosmic lighthouse, a highly dense, rapidly rotating star that emits beams of radio waves. If Earth ...

Under the sea, green algae have evolved a clever way to handle too much sunlight. Scientists found that a special pigment ...