Blood Moon

Blood Moon

A blood moon is a striking astronomical event that occurs during a total lunar eclipse, when Earth comes directly between the Sun and the Moon. Instead of disappearing completely, the…
The Van Allen Belts

The Van Allen Belts

The Van Allen radiation belts are two layers of energetic charged particles trapped by Earth’s magnetic field. They form a protective shield around the planet, blocking much of the dangerous…
How Earth’s Axis Changes

How Earth’s Axis Changes

The Earth does not stand perfectly still as it spins; its axis of rotation—the imaginary line running through the North and South Poles—slowly shifts over time. This change in Earth’s…