Some Things You May Not Know About Planet Earth: Part 1: We Have Two Moons?

Did you know that the Earth is not a perfect sphere?
It's kinda squished and bumpy.

The Earth bulges slightly at the equator and pushes in slightly at the poles.

Uneven mass means slightly uneven gravity.

Because our globe isn't a perfect sphere, its mass is distributed unevenly. 

You would weigh less at the equator than you would at the North or South Pole.

You could be spinning through space at just over 1,000 miles per hour. 

People on the equator move the fastest, while someone standing on the North or South pole would be perfectly still. 

The Earth moves around the sun at 67,000 miles per hour.

Earth is about 4.54 billion years old.
Researchers calculate the age of the Earth by dating both the oldest rocks on the planet and meteorites that have been discovered on Earth.
What may be the oldest known rocks on Earth are called the Nuvvuagittuq Belt on the coast of the Hudson Bay in Northern Quebec.

They are estimated to date back to 4.28 billion years ago.

The hottest spot on Earth is in Libya.

El Azizia, Libya is where temperature records from weather stations reveal it hit 136 degrees Fahrenheit on Sept. 13, 1922, according to NASA Earth Observatory. 

The magnetic pole is moving.

Earth has a magnetic field because of the ocean of hot, liquid metal that sloshes around its solid iron core.

This flow of liquid creates electric currents, which, in turn, generate the magnetic field. 

Since the early 19th century, the magnetic north pole has been creeping northward by more than 600 miles.

The rate of movement has increased, with the pole migrating northward at about 40 miles per year, compared with the 10 miles per year estimated in the 20th century.

The magnetic field also varies in strength, and it was found to be weakening.

Earth doesn't have a tallest mountain, it has  two.

The summit of Mount Everest is higher above sea level than the summit of any other mountain, extending some 29,029 feet high.

When measured from its true base to summit, Mauna Kea measures a length of about 56,000 feet.

The Earth use to have two moons.

A second moon, spanning about 750 miles wide, may have orbited Earth before it catastrophically slammed into the other one. 

This titanic clash may explain why the two sides of the surviving lunar satellite are so different from each other.

Some scientists claim Earth still has two moons.

According to researchers reporting in the Dec. 20, 2011, issue of the planetary science journal ICARUS, a space rock at least 3.3-meter wide orbits Earth at any given time. They're an ever-changing cast of "temporary moons." 

Our planet's gravity captures asteroids as they pass near us on their way around the sun and when one of these space rocks gets drawn in, it typically makes three irregularly shaped swings around Earth, staying with us for about nine months before hurtling on its way.