Technology had enabled humans to explore the deep sea, the Earth’s poles, and outer space. But we shouldn’t forget historical lessons about frontiers in the process of traversing them.
One common terrestrial bacterium has been found to grow in the microgravity of the International Space Station than on Earth, although it remains a mystery why.
Could life really exist on other planets? The most positive scientific answer we can offer is: well, maybe, but we do not yet have enough evidence for or against. Yet Milton Wainwright and colleagues from…