Guide to Space
What is Earth’s Magnetic Field?
You can't see it, but there's an invisible force field around the Earth. Okay, not a force field, exactly, but…
Earth, Sun and Moon
From our perspective, the three objects that have the greatest impact on our lives are the Earth, Sun, and Moon.…
Why is Science Important?
Science is everywhere in today’s world. It is part of our daily lives, from cooking and gardening, to recycling and…
Who Discovered the Earth?
[/caption] When I was first asked this question, "who discovered the Earth", I thought it was ridiculous. If you use…
Earth’s Interior
[/caption] Take a look down beneath your feet. You're standing on the Earth's crust. Although it seems limitless, the Earth's…
Why is the Earth Round?
[/caption] Don't listen to the Flat Earth Society, they're wrong; the Earth is round. But did you ever wonder why…
Density of the Earth
[/caption] The density of the Earth is 5.513 g/cm3. This is an average of all of the material on the…
What is Earth’s Crust?
You might not realize it, but you're standing on a thin shell of solid rock encasing a vast quantity of…
How Many Planets are in the Milky Way?
[/caption] How many are in the Milky Way, though? There could be billions, many of them habitable and Earth-like, according…
Earth’s Mantle
[/caption] The ground under your feet might seem solid, but you're standing on a relatively thin crust of rock above…