The Kp index is a scale from 0 to 9 used to measure geomagnetic activity. The higher the number, the more likely auroras are ...

The annual event will say farewell with its 13th year in 2025, taking place on select nights Nov. 28 through Dec. 28.

More than 22,000 people visit every year to see Thomas Edison and Henry Ford's houses, along with Edison’s former laboratory, a museum and more.