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Interstellar Seeds Could Create Oases of Life

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Milky Way galaxy

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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