Earth Science is a wide, scientific discipline covering all facets of how the earth works. Learn about weather, global warming, natural disasters and how the world’s oceans function.
Last Updated: Nov 14, 2008
HowStuffWorks Daily Science RSS Feed explores all the curiosities of our wonderful world - go behind the scenes to see how the amazing world of science really works!
- Quiz Yourself: Astronauts
Astronauts have a reputation for being the brave and skilled few willing to risk their lives by strapping themselves aboard a rocket and blasting into outer space. How much do you know about them?
- How Astronauts Work
Astronauts risk their lives in the pursuit of science. How does NASA know who can be an astronaut? And what do they do when they're not in space?
- How Space Food Works
Space food has come a long way from Project Mercury's paste-filled tubes. Today's astronauts select menus that include everything from macaroni and cheese to brownies. So do astronauts really eat space ice cream?
- How Space Suits Work
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!
- How Space Shuttles Work
In its nearly 30-year history, the space shuttle program has seen exhilarating highs and devastating lows. Learn all about the space shuttle program.
- How Space Stations Work
Imagine waking up in the morning, looking out your window and seeing the planet Earth below you. What would it be like to live in space? Find out all about the International Space Station.
- How NASA Works
When most people think of NASA, they think of astronauts and Kennedy Space Center, but there's much more to this nearly 50-year-old organization. Learn about the history of NASA, how its structured and exactly what it does.
- NASA's 10 Greatest Achievements
Since its inception in the late '50s, NASA has accomplished some amazing technical feats. But what are some of the administration's greatest moments?
- NASA Inventions You Might Use Every Day
Although most people today will never set foot on the moon, it's likely you come into contact with a NASA byproduct every day.
- When We Left Earth: The NASA Missions
Explore the historic space voyages, technology and people that have shaped 50 years of NASA.
- How Voyager Works
The Voyager space probes took dazzling pictures of planets no one had ever seen. And they're still on the move, carrying golden records with a message for aliens -- complete with bagpipes and Louis Armstrong.
- How the Mars Exploration Rovers Work
The second Mars Exploration mission rover, Opportunity, has successfully landed and is now sending back breathtaking photos. See what these high-tech rovers are all about.
- How Lunar Landings Work
People around the world watched as Neil Armstrong touched the moon and declared, "That's one small step for man; one giant leap for mankind." But how did we put a man on the moon?
- What if an astronaut went on a space walk without wearing a space suit?
Because an Earth-like environment is created within a spacesuit, it allows you to walk around in space in relative safety. But outer space is an extremely hostile place and could kill you if you aren't protected.
- Why do some people believe the moon landings were a hoax?
It was a small step for a man, a giant leap for mankind. But some people say that the moon landings never happened at all. Why all the conspiracy theories?
- How do spacecraft re-enter the Earth's atmosphere?
Blasting a spacecraft into space is one thing. Bringing it back in one piece is another. Spacecraft are likely to burn up into bits if they aren't specially insulated and designed for the ride.
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- Physical Science
Physical science is the study of the properties and structures of matter, space and time. This section introduces major concepts in physical science, as well as exploring special areas like special relativity.
- Life Science
From the smallest microbe to the largest mammal, Life Science explores the origins, evolution and expansion of life in all its forms. Explore a wide range of topics from animal profiles to genetics and human Biology.