Earth Eclipse.

Earth Eclipse is a eclipse that happened in 1000,000,000 light years behind universe and Sputnik X.

History
About 50 mmillion years ago the Earth has made it's very first eclipse, then the same 50 million years later, in 2014, the Earth has made the eclipse once again, causing Equestria to go dark, and the rest of the world.

Affects
It doesnt affect anything except the world being dark, but 50 millions years ago, it has affected the Earth, and 1 million years ago, it has caused USA to explode and form Equestira.