confusing and amazing thigs about the earth and space

amazing things

Earth travels through space at 66,700 miles per hour.
The total surface area of the Earth is 197 million square miles.
The Earth is the densest major body in the solar system.
Earth's oceans are an average of 2 Miles deep
the space
The Universe is probably about 15 billion years old, but the estimations vary.
A day in Mercury lasts approximately as long as 59 days on earth.
There may be a huge black hole in the very middle of the most of the galaxies.
The swirling gases around a black hole turn it into an electrical generator, making it spout jets of electricity billions of kilometers out into space.