Robotics researcher Srikanth Saripalli advances a bizarre argument against human spaceflight and in favor of sending a robots we haven't invented yet to distant worlds.

If we're going to have astronauts working and living in space for years at a time, cramming them in tight, fixed spaces without artificial gravity is doing them, and us, a major disservice.

We cannot treat Mars the same way we treated the Moon.

As far as colonization ideas go, Mars One is a terrible one.

Printing outposts on the Moon is all the rage for mission planners. And if they succeed, we will all feel the benefits here on Earth.

Combining the expense and inconvenience of a rocket launch with the noise and danger of hypersonic flight, this space liner is very unlikely to ever take off.

A simulated mission to Mars finds that one of the biggest potential threats to astronauts outside of radiation will be cabin fever.

Just how realistic is Elon Musk's 80,000 person outpost on Mars given enough time and money?

To protect ourselves from alien extremes, a NASA plan calls for telepresence from orbit.

All you need to know about how hard it is to land on Mars is that rocket scientists call it "seven minutes of terror."

Space exploration and long term settlements of alien worlds might actually be a recipe for creating new countries with their own cultures, languages, and armed forces.

It's been half a century since the first human slipped into orbit around our planet. And while we've done a lot in space since then, we haven't done nearly enough.

Embryos outside of Earth's gravity seem to have a hard time developing, meaning that reproduction in space requires a far more fine tuned environment.

Tau Zero Foundation's founder's interpretation of the Earth's energy generation projections profoundly misunderstands its own point.

Single stage to orbit spacecraft have been mothballed for decades. But with the potential of space tourism, there may be an incentive to take another run at designing them.