Earth has a 'pulse' of 27.5 million years

Giant Meteorite Landed in Ukraine 650,000 Years after Dinosaur-Killing Chicxulub Event

The most extreme space weather occurs when the Sun blasts billions of tons of energized particles toward Earth at speeds up to 6.7 million mph (3,000 km/s). Known as coronal mass ejections, these explosions can cause intense geomagnetic storms, as well as negatively affect astronauts and spacecraft.

Astrobiologists Detect a Signature of Life Remotely. Don’t get too Excited, Though, it was With a Helicopter Here on Earth