Researchers studied the orbits of 150 planets in the Milky Way and found that many of them were at the right temperature to have life.
For generations, scientists have known that the Milky Way contains billions of stars. In more recent years, they have learned that many of those stars have planets orbiting them.
According to researchers with the University of Florida, there could potentially be hundreds of millions of planets in the Milky Way galaxy situated in a star's habitable zone. A star's habitable zone is an area where the planet is close enough to keep water from completely freezing, but not too close so that water doesn't boil away.
University of Florida astronomy professor Sarah Ballard and doctoral student Sheila Sagear studied 150 dwarf planets in the Milky Way using NASA's Kepler telescope. What the researchers wanted to know was not just the average distance a planet has to its star, but the shape of the planet’s orbit. The researchers said an eccentric orbit causes temperature extremes that would make holding liquid water difficult.
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