Space

Explore the vast reaches of space and mankind’s continuing efforts to conquer the stars, including theories such as the Big Bang, the International Space Station, plus what the future holds for space travel and exploration.

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How do astronauts function in their space suits for hours at a time?

I would like to know how an astronaut, who is in a space suit for hours, can eat, drink and eliminate fluid- and solid-waste byproducts? What "mechanics" are built into the suit and how do they operate?

How Robonauts Work

Have you heard about the new astronauts in town? They're dexterous, sensitive and don't mind doing dull and repetitive tasks in space a whit. They're robots. And one of them is shacking up at the International Space Station right now.

NASA Thinks Augmented Reality Is the Future of Tech Support

You can only pack so much for a trip to space. That means limited people, knowledge and supplies. NASA thinks augmented reality systems may help. Plus, they look fun!

How long can a human survive in outer space?

How long can a human survive in outer space? In science fiction movies, this seems to be an area of much creative license, with some people exploding instantly, and others surviving for nearly a minute without long-term ill effect. I read once that one's blood would boil, but I read elsewhere that this isn't true. So what is it?

How do I become an astronaut?

Like a firefighter or a rock star, an astronaut is one of those jobs kids say they want to have when they grow up. If you're still serious, we can tell you what it takes.

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 Hubble Space Telescope Works

Since its launch in 1990, the Hubble Space Telescope has ranked as one of man's greatest achievements in space or otherwise. What does the future hold for the great observatory, and will its space telescope successor measure up to Hubble?

How Antimatter Spacecraft Will Work

Antimatter has the ability to store incredible amounts of energy in a very small space. See how it will work.

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 Space Tourism Works

On September 18, 2006, Anousheh Ansari, a telecommunications entrepreneur, became the first female space tourist and the fourth space tourist overall. Could you be next? Find out what's in the works to get you to space.

How Asteroid Mining Will Work

Asteroid mines could become an incredible source of building supplies for a colony on the moon. Learn how they will work!

How Mars Works

Since the 1960s, we've been captivated by our planetary neighbor. How different is the planet next door, and what have we learned about it so far, compliments of the Phoenix Mars Lander and other spacecraft?

How Terraforming Mars Will Work

The thought of terraforming Mars is one of those ideas so outrageous that it just might work! Learn how it will work!

How Stars Work

When you look up at night and see thousands of stars, have you ever wondered what you are looking at? Learn what stars are and how they live and die!

How Space Planes Will Work

Space planes are likely to be the replacement for the space shuttle. Learn how they will work!

How Inflatable Spacecraft Will Work

Inflatable spacecraft will revolutionize satellites and space habitats. Learn how they will work!

How the Sun Works

The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. But what is it exactly, and what will happen when it burns itself out?

Why does the moon look so much bigger when it is near the horizon?

Why does the moon look so much bigger when it is near the horizon than when it is high up in the sky? This question has been pondered for hundreds if not thousands of years, and is commonly referred to as the moon illusion.

How Solar Sails Work

What is a solar sail? How can you use sunlight to move a spacecraft in outer space? In this article, HowStuffWorks will show you how solar sail technology works, take an in-depth look at the Cosmos-1 mission and find out what solar-sails mean for future space travel.

How big does a meteor have to be to make it to the ground?

Where I live it is pretty common to see "shooting stars" -- streaks of light in the sky at night. How big is a shooting star? Do they land on earth or do they burn up? Do they land on the ground as meteorites?

How Space Elevators Will Work

A space shuttle launch is expensive -- about $10,000 per pound. The LiftPort Group is developing a new system that could cut the cost down to about $400 per pound. Find out how a space elevator might be your ticket into orbit.

What Is the Chandler Wobble?

The Chandler wobble is the change in the spin of Earth on its axis. Think of the wobble you see in a toy top when it first starts spinning or slows down. Its 'poles' do not spin in a perfectly straight line.

Could I see a flashlight beam from Earth on the moon?

If I was on the moon and the earth was black (no lights were on) and a flashlight was turned on facing the moon, would I see the light? If I couldn't, would there be any way to detect any residual matter that came from the light on Earth or does light die after a certain distance?

How are the Voyager spacecraft able to transmit radio messages so far?

The Voyager spacecraft use 23-watt radios. This is higher than the 3 watts a typical cell phone uses, but in the grand scheme of things it is still a low-power transmitter. The key to receiving the signals is therefore not the power of the radio, but a combination of three other things.

Is there any way to see satellites that are in orbit?

Until its fiery landing in the Pacific Ocean in Mach 2001, the MIR space station was one of the largest objects orbiting the planet, so large that it was especially easy to see -- if you knew what you were looking for.

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