Interactive: How a missile shield works
Related: Space
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Who wants to take a one-way trip to Mars?
A one-way trip to Mars sounds like something you'd wish on your worst enemy — yet more than 78,000 people have paid up to $75 for a chance to die on another planet. Three hopeful voyagers explain why.
- Our storming sun sets the skies aglow
- 'The World at Night' reveals beauty — and a dark side
- Astronaut to become first quilter in space
- Space station chief returns home a star
- Astronaut Sally Ride: A national tribute
- Moon's eclipsed shadow on Earth viewed
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Who wants to take a one-way trip to Mars?
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