Most Scientists Agree Alien Life Exists, Study Finds
Our galaxy, the Milky Way, is 100,000 light-years across (one light-year is about six trillion miles). According to some estimates, there could be one to two billion galaxies in the universe.
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Our galaxy, the Milky Way, is 100,000 light-years across (one light-year is about six trillion miles).
According to some estimates, there could be one to two billion galaxies in the universe.
So perhaps it's no wonder scientists have long wondered whether we can really be alone in that endlessness.
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The useful part
Our galaxy, the Milky Way, is 100,000 light-years across (one light-year is about six trillion miles). According to some estimates, there could be one to two billion galaxies in the universe. So perhaps it's no wonder scientists have long wondered whether we can really be alone in that endlessness.
How it works
- Given how statistically likely other life seems to be, it asks: where are all the aliens?
- However big you think the universe is, it's almost certainly bigger.
- In fact, our intergalactic solitude seems so unlikely to some that a puzzle – the Fermi paradox – centres on its improbability.
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