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What if Earth changed its orbit?
science.howstuffworks.com/science-vs-myth/what-if/what-if-earth-changed-its-orbit.htm
Our planet's path around the sun defines life on Earth. What would happen if it changed?
What does gravity have to do with the big bang?
science.howstuffworks.com/innovation/science-questions/gravity-big-bang.htm
Gravity and it's relationship to the big bang are explained in this article. Learn about the relationship between gravity and the big bang.
What Is the Greenhouse Effect? Is It Inherently Bad?
science.howstuffworks.com/environmental/green-science/question746.htm
We'd be up a creek without Earth's atmosphere and the greenhouse effect it provides, but it turns out that an overactive greenhouse effect can result in a similarly devastating outcome.
How Wind Tunnels Work
science.howstuffworks.com/wind-tunnel.htm
Wind tunnels are the unsung heroes of aerodynamics, leading to safer planes, cars and space vehicles. Learn how wind tunnels work.
What was the first telescope that humans launched into space?
science.howstuffworks.com/first-telescope-humans-launched-into-space.htm
The history of space exploration is full of firsts: first animal in space, first human on the moon, first probe to reach mars. But as they say, you've got to look before you leap. So what was the first telescope launched into space?
How Space Suits Work
science.howstuffworks.com/space-suit.htm
We are seeing a lot more space suits now that the international space station is occupied. Learn how space suits work and why they cost $12 million each!
Saturn's Rings Will Exist for Just a Blip in Time
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Saturn's rings will completely disappear in the next 100 million years. Learn more about Saturn and its famous rings at HowStuffWorks.
How is carbon dioxide eliminated aboard a spacecraft?
science.howstuffworks.com/carbon-dioxide-eliminated-aboard-spacecraft.htm
To get carbon dioxide eliminated aboard a spacecraft you need a system similar to SCUBA. Learn about carbon dioxide elimination.
How Black Holes Work
science.howstuffworks.com/dictionary/astronomy-terms/black-hole.htm
A black hole occurs when a massive star dies -- its enormous mass implodes and becomes so heavy that it bends space. So how do astronomers detect something that they can't see?
When Is the Earth Going to End?
science.howstuffworks.com/environmental/earth/geology/earth-500-years.htm
The end of Earth will likely come about because of the sun in our solar system. This much you might already know, but we actually have an approximate date.