What Is the Prime Meridian?
The Prime Meridian is a line that splits the Earth into the Eastern and Western Hemispheres, passing through Greenwich, London.
Outer Space
10 Types of Forces
A force can make things move, stop, or change direction. For example, types of forces include gravity, friction, and magnetism.
Where Is the International Date Line?
The International Date Line is an imaginary boundary, running from the poles. It lies mainly along the 180° longitude in the Pacific Ocean.
Tropic of Cancer vs Tropic of Capricorn
The Tropic of Cancer are imaginary lines that represent the furthest north and south that the sun can appear directly overhead at noon.
Where Is the Equator?
The equator is an imaginary line that circles completely around the Earth. It divides the planet into the Northern and Southern Hemispheres.
10 Types of Natural Disasters
A natural disaster is a sudden and extreme event caused by nature that can cause damage and harm people. Learn the types of natural disasters.
Electromagnetic Radiation – Explore the EM Spectrum
Electromagnetic radiation is invisible waves of energy that travel through space, including visible light, radio waves, microwaves, and more.
![A Visual Guide to Our Solar System [Infographic]](https://earthhow.com/wp-content/uploads/2018/08/Solar-System-Infographic-425x319.png)
A Visual Guide to Our Solar System [Infographic]
Our solar system is a 4.57 billion years old planetary system that includes a central star and all the natural space objects (planets) orbiting the Sun.
Near Earth Objects (NEO): Are We at Risk of an Impact Collision?
Near Earth Objects (NEO) are debris in space at risk colliding with Earth. Asteroids, comets and meteors pose potential risk to Earth.
What’s the Difference Between Meteors, Meteorites and Meteoroids?
Their difference is location. Meteoroids are up in the sky. Meteors fall to Earth and flash light breaking down in the atmosphere. Meteorites are on Earth.
Facts About Asteroids and Our Asteroid Belt
Asteroids are odd-shaped rocks made of metal and other elements. There are about 100,000 known asteroids mostly in the asteroid belt between Mars & Jupiter.
The 17 Spheres of Earth
How many spheres of Earth exist on Earth? If you count them all, you would get about 17 of them. This is the definitive guide to all 17 spheres of Earth.
Earth’s Doppelgängers: A List of Earth Like Planets
Today, you’re going to disover a whole list of Earth like planets. Like Kepler 62, Gliese-581c and Proxima Centauri b. These are Earth’s Doppelgängers.
100 Earth Facts: A Scientific List of Facts About Earth
Earth needs no introduction. From its origin to its inevitable future, the story of Earth is greatest story ever told. Get started with this list of 100 Earth facts.
What Color Is the Moon?
The color of the moon is mostly grey. And the lunar maria are dark grey. The 4 most dominant rocks are: mare basalts, breccia, anorthosite and regolith.