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When drake first presented the equation in about 1850

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When Drake first presented the equation in about 1850 he reasoned that thevalue of N was about 100.
Which of the following is not part of the encoded so-called Arecibo messagedirected toward M13?
SETI stands for what?
The Drake Equation is an attempt to determine what?
If dark energy is real, up to what percentage of the total energy of theuniverse might it be?
Where do we think the oxygen in our atmosphere came from?
What was the Cambrian explosion?
Fermi’s Paradox asks the question “where are the aliens?”. Which of thefollowing is not a reasoned response to the question?
What was Carl Sagan referring to when he talked about “that mote of dust,suspended in a sunbeam”??
Which of the following places is not generally considered a potential home forlife in our solar system?
We are not yet capable of detecting life on planets around other stars. But asour technology develops, what is our first real chance of detecting such life?
If the entire history of Earth were condensed into one year when in that yeardid the Cambrian explosion take place?
When were the first galaxies formed?
According to the Big Bang theory, who do we live in a universe that is made ofalmost entirely of matter than antimatter?
In simple terms what is the Big Bang Theory?
What is significant about the Era of Nuclei?
Why can’t the dark matter in galaxies be made of neutrinos?
What do we mean by the terminflation?

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