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Space Travel

The Environmental Price of Rockets

Do rocket launches have a significant environmental impact? And if our future has a lot more space travel in store, what does that mean for us?

The NASA Twin Study

What is the Twin Study? What does NASA hope to learn from Mark and Scott Kelly? And how might it help us get to Mars?

Setting Sail for the Stars

What is a solar sail and how does it work? We explain the technology and talk about current and future uses of solar sails.

What is the EmDrive?

Could a high tech engine violate the laws of physics? What is a reactionless drive? We examine the claims and criticisms of the EmDrive.

Shkadov Thrusters: Moving the Solar System

One day in the far future, we may have to abandon our home and set out to colonize a new part of the galaxy. But is it possible to take the entire solar system with us on the journey?

Here's Your Jetpack

Where's my jetpack? Where's my jetpack? Where's my jetpack? Where's my jetpack? Where's my jetpack? Where's my jetpack? Where's my jetpack?

Environmental Sensors in Space Travel

In some science fiction universes, a quick scan from your EVA suit is all you need to determine if the planet you're visiting is safe. Can we do that in real life?

Space Travel and Synthetic Biology

We can't carry everything we need for long space missions. Could synthetic biology help us produce stuff like biopolymers, drugs or even food?

Time for a New Clock

How to Find an Exoplanet

Scientists have discovered hundreds of exoplanets. How do you detect something that far away?