The European Space Agency has released a chart of the exact positions of many stars in the Milky Way and neighboring galaxies. But the map only shows a small fraction of what's out there.
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The European Space Agency has released a chart of the exact positions of many stars in the Milky Way and neighboring galaxies. But the map only shows a small fraction of what's out there.
Cosmic expansion stretches space itself, as if space were made of some kind of stretchy rubber material; there is no physical border, only stretching space, says astrophysicist Marcelo Gleiser.
Mary Mann's new book digs into a phenomenon as old as humanity: boredom. Why do we get bored? Is there a cure? Yawn is a thoughtful read, but its mix of autobiography and scholarship doesn't jell.
Meet Kate Rubins, a virus-hunter turned astronaut. When she sequenced DNA in space for the first time, she opened the door to a new era in space biology.
