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Showing posts from February, 2019

Why we have not had extraterrestrial visitors?

The first big problem is that interspacial distances are surprisingly vast.

For instance, it will take us about 6 months to get to Mars. At that same speed, the time it would take to get to the nearest star (aside from the Sun) would be 40,000 years or so. Even a huge generational ship is likely to fail over that time period.

What if the aliens have faster than light travel? Well, Einstein’s relativity has been around for about a century and there is no theoretical way of traveling faster than light. But even if we could travel at c, it still would take hundreds of years to possibly get to a planet that might have intelligent life.

Recently, we have found that there are more reasons for not having aliens come to Earth.

Origin-of-life researchers are finding it to be much more difficult than they thought 50 years to figure out how life started on Earth. There is evidence for single-celled life from over 3.5 billion years ago. The Earth is about 4.5 billion years old, so life started fa…