Freefall

One of the roadblocks to human exploration of space is the effect of freefall on our muscles. We can only stand about six months in zero-G before our muscles start to irreversibly jellify. Since Mars and other popular destinations are considerably farther than we can travel in that short a time, NASA is working on the problem with carbon nanotube neural implants. Yep. You read the right.

Now this is a positively delicious idea for even the most casual sci-fi fan. Brain implants to facilitate space travel! It could pioneer all sorts of new technologies. This particular research is directed at transmitting impulses to the brain. But if that research could lead to receiving impulses, then the possibilities really open up. Imagine what a pilot could do if they didn’t have to rely on their physical reflexes to fly an air or space craft? OK, I know, I’ve seen too many movies.

There is another interesting question that rises out of this line of research. Exploring implant technology indicates that we’re willing to use them to achieve several months, or years in space. It’s not a stretch to assume that some might also endure other enhancements, from the cybernetic to the genetic, in order to travel to other worlds. If we adapt ourselves to space to travel to other planets, will we ultimately find ourselves more at home in the space between them?

Gliese 581 C

Astronomers at the Geneva Observatory recently announced the discovery of what might be a terrestrial planet in around the star Gliese 581 in the constellation, While there’s still some debate about just how much solid ground there might be up there, it is interesting to see the progress we’ve made in our picture of the universe.

Four centuries ago, Galileo Galilei ran afoul of the Catholic Church for upholding the idea of a heliocentrism. We’ve since learned that even our Sun isn’t the center of the universe. It’s not even the center of our own galaxy for that matter. Now we’re closer to finding evidence that our solar system isn’t wholly unique in having terrestrial planets.

The discovery of a terrestrial planet in another solar system, some 20 light years away, fills in the edges of our biggest map in some very important ways. And it wasn’t all that long ago that we had a hard time getting a reliable map of someplace right here on Earth! (Really, not long ago at all. The last time I downloaded driving directions to somewhere… but I digress.)

Physicist Steven Hawking has said that in order to survive, the human species must go into space. Finding terrestrial planets outside our own solar system is certainly a step in the right direction, but we shouldn’t get too excited about looking for a westward passage to China just yet. In order to seriously explore the challenges of interstellar travel, we've got to establish a foothold in space right here in our own solar system.

It's also been said that if we can get into orbit, we're halfway to anywhere. In this case, I think the "we" is most important. We need established and functioning bases in orbit or on the moon, and we need to test our legs on Mars. By the time we get those things accomplished, planet hunting astronomers should have a pretty good selection of interstellar destinations to choose from.