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Interstellar Seeds Could Create Oases of Life
In this theoretical artist's conception of the Milky Way galaxy, translucent green "bubbles" mark areas where life has spread beyond its home system to create cosmic oases, a process called panspermia.
Credit: NASA/JPL/R. Hurt
We only have one example of a planet with life: Earth. But within the next generation, it should become possible to detect signs of life on planets orbiting distant stars.
From Harvard-Smithsonian Center for Astrophysics
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