Red sprites seen above the Himalayas reveal powerful storms, rare upper-atmosphere events, and atmospheric mysteries ...

Have you ever heard of—or even seen—red lightning? These are not animated characters but real atmospheric phenomena known as ...

Lightning is just one of the many spectacular luminous events that occur in Earth's atmosphere. A particularly sought-after ...

These eye-catching phenomena have long puzzled skygazers and scientists—until two amateur astronomers made a very serendipitous discovery.