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The idea that there’s a moral imperative for humans to expand beyond Earth is echoed by influential proponents of space exploration. Tamara Craiu/Flickr

To boldly go toward new frontiers, we first need to learn from our colonial past

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.
This attractive specimen, collected from a doorknob in New York, loved being in space. Alex Alexiev/UC Davis

Bacteria found to thrive better in space than on Earth

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.
Funny looking alien. University of Sheffield

Proof of alien life? You need a lot more evidence than that

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…

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