How Big Is the Moon?
How big is the moon? It’s about 1/4 (27%) the size in diameter of Earth. Alternatively, you can think of the moon being about as wide as the United States.
Outer Space
How to Measure the Distance to the Moon
How do we measure the distance between the Earth and the Moon? Astronomers use parallax, lunar eclipses, radar and laser ranging to measure lunar distance.
How Fast Does the Earth Spin? Earth vs The Engineered
How fast does the Earth spin? Earth spins at an incredible 1000 miles per hour (1600 km/hr). We compare the Earth’s spin to nature and engineered velocities
Moon Gravity: Your Weight on the Moon
The gravity of the moon is 1/6 of Earth. If you stepped on a scale on the moon, you could subtract 83.5%. So 100 kg in weight would be 16.5 kg on the moon.
![Supermassive Black Holes: The Center of Galaxies [Infographic]](https://earthhow.com/wp-content/uploads/2019/02/Supermassive-Black-Holes-425x319.png)
Supermassive Black Holes: The Center of Galaxies [Infographic]
All galaxies have supermassive black holes at the center of it. These collapsed stars are a few times the mass of a sun which run out of fuel and explode.
Solar Radiation: How Sunlight Heats the Planet
Our sun is 99% of the total mass of the solar system. It’s this energy from the sun’s thermonuclear reactions that heats the Earth from solar radiation.
Main Sequence Star: Our Sun’s Thermonuclear Reaction
Our sun is a main sequence star. This just means that it burns hydrogen into helium and goes through this “main sequence” for about 95% of its life span.
Where is the North and South Pole?
If you stick a pencil through Earth at the point of rotation, these 2 points are the north/south poles. Geographically, it’s where longitude lines converge.
A Guide to Earth’s Lithosphere
Earth scientists compare the lithosphere to a thin, solid and brittle eggshell encasing our inner planet or a thick piece of wood that dries and breaks.
How To Define the Geosphere
It’s difficult to pinpoint an exact definition for the “geosphere” because it’s used in several different ways. But here are 2 ways to define the geosphere.
Earth Statistics: Straight-Up Stats of Earth
This list of Earth statistics provides all the numbers of our home planet. For example, here are size, rotation, density, temperature, orbit, age and more.
How Gravity Sculpted the Earth
What brings order on Earth is gravity. For all matter, it’s always at work. This is how gravity works for ocean tides, planet formation and escape velocity.
What is the Goldilocks Zone?
Lucky for us, Earth is in the Goldilocks zone. The range where liquid water persists is 0.99 to 1.7 AU. But it doesn’t necessarily mean life or water exists.
![Neptune Facts: The Big Blue Planet [Infographic]](https://earthhow.com/wp-content/uploads/2018/06/Neptune-425x319.png)
Neptune Facts: The Big Blue Planet [Infographic]
Planet Neptune is the farthest planet from the sun at 4.495 billion kilometers from the sun. Neptune has some remarkable facts like its 14 moons and tilt.
![7 Planet Saturn Facts: Beyond its Signature Rings [Infographic]](https://earthhow.com/wp-content/uploads/2018/06/Saturn-425x319.png)
7 Planet Saturn Facts: Beyond its Signature Rings [Infographic]
We all know planet Saturn for its iconic rings. But there’s more facts about Saturn like its weather, Titan and its the lightest planet in the solar system.