And that’s what causes thunderstormstoo ... a shock wave – a huge vibration in the airthat we hear as thunder. We usually see lightning before we hear thunder. That’s because light and ...

Thunder and lightning safety starts with seeking good shelter. Indoors is best, and lower levels or basements are optimum. If you don’t have that, pick a room with no windows that doesn’t have an ...

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