NASA's robotic exploration program is being flat-lined.

The strong support for space exploration in the Congress is very welcome, especially at a time when there are so many other budget pressures.

We didn't seek this out, but after an in-depth exploration it makes sense for us. We think these guys have a real chance to be part of our future.

We have been listening for alien signals for decades. It's time we started to watch for signals as well.

Everything we pour into the shuttle is an investment in the past.

These deaths are huge because of the symbolism.