What are the odds of an alien civilization forming within 500 years?
Out of that vast range, the odds that an alien civilization would be within 500 years of our stage of development are millions to one — and that assumes that other planets follow the same path as ours, which is a huge leap of faith. But let’s keep digging into the question. How to launch an interstellar probe using a laser lightsail.
What do we expect from civilizations much older than US?
Based on our own experience, we expect that civilizations much older than ours will be scientifically savvy and hence technologically advanced.
What are the odds of alien life on other planets?
Out of that vast range, the odds that an alien civilization would be within 500 years of our stage of development are millions to one — and that assumes that other planets follow the same path as ours, which is a huge leap of faith. But let’s keep digging into the question.
How long would it take to communicate with aliens?
The researchers calculate that a theoretical alien civilization would have to be broadcasting detectable signals for approximately 3,060 years for us to pick them up. That means to establish a two-way conversation with such a civilization, humanity (and the aliens) would have to hold it together for another 6,120 years.
What would happen if humans went extinct?
“We’ve had an industrial society for only about 300 years, but there’s been complex life on land for nearly 400 million years.” If humans went extinct today, Frank says, any future civilization that might arise on Earth millions of years hence might find it hard to recognize traces of human civilization.
How many intelligent alien civilizations are there in the Milky Way?
Well, maybe. How many intelligent alien civilizations are out there among the hundreds of billions of stars in the spiral arms of the Milky Way? According to a new calculation, the answer is 36.