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RE: Are we alone in the Universe?
The problem I like is time. Even if we observe intelligent life on an exoplanet with some super telescope, it would still take a billion years to get to them, at which point they'd probably have been consumed by a supervolcano 20 million years ago or something
And besides we still haven't figured out what the definition of "life" is. There might be lifeforms that we cannot comprehend or observe.
Agreed. This is why the detection of Gravitational waves is a breakthrough. They can revolutionise the way we look at Space completely! Thanks for your comment.