Some statistical guessing to make you think.

Here are the answers. One more question coming up soon.

1. How many countries are there in the world today? 196.
2. How many languages are spoken today? 6,500.
3. How many people are on Earth? 7.5 billion. (Approximately, unless somebody's moved out recently.)
4. According to the UN, what is likely to be the population of Earth in 2100? 11 billion, as reported by the BBC.
5. How many stars are in the Milky Way? 100-400 billion, according to NASA.
6. How many potentially habitable exoplanets are there in our galaxy? 11 billion, give or take, according to Kepler space mission data.
7. How long does it take to get to Mars? 942 hours at 58,000 kph. According to space.com.
8. How long does it take to get to Alpha Centauri? About 100 years at 4/5 the speed of light.
9. How many humans have been in space? 553. (At last count.)
10. How many spaceships do we have that are capable of taking us to another habitable planet? Zero.

Final question: What is the moral of this quiz?

Dmitri Gheorgheni

05.06.17 Front Page

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