I have explored the idea of humans traveling to other planets. This guy says it all. He puts my wife to sleep, but I like the dude.
When we completely destroy our planet’s environment then and only then space conization would become our “main ideology.”
Sadly, however, even space colonization leads to the same question – will we destroy the next planet just like this one?
This hypothetical question doesn’t take the harsh realities described below. You begin by saying planetary exploration to Mars will bring new policies. Maybe here on Earth, like what we have in Antarctica, for Mars. The Chinese are likely the first ones to send a manned mission.
In my pessimistic and realist point of view, Mars will never have a human civilization living on it. I almost get tired of saying it over and over again. Mars cannot be terraformed. It is too small and has no organized magnetic field to shield from harmful rays of the sun. Too small means too little gravity, which means to have enough atmospheric pressure for humans would require a much thicker atmosphere than Earth because things, including atmosphere, weigh less on Mars. Because it’s so small, however, it doesn’t have the gravity to hold such an atmosphere and the unhindered cosmic rays from the sun would just blow it away into space.
Mars is not very hospitable and is very, very far away. We may one day have human footprints on Mars, although that is not necessary and very dangerous just so we can say we did. Pretty much everything we want to find out about Mars can be done by our rovers and future rovers.
Essentially you’re asking if large numbers of people lived on Mars, could we make an ideal society. Succinctly put, no, because Mars can never be a livable planet for masses of people.
No atmosphere that would be heavy enough for us to breath could be held on Mars because the gravity of Mars is weak. This would mean a much thicker layer of atmosphere than Earth, yet because of the weak gravity, the atmosphere would simply blow away with solar winds. If anyone ever lived on Mars it would be in enclosed and small spaces capable of protecting the inhabitants from dangerous solar radiation.
Mars is a pipe dream. We may one day put footprints there, like on the moon, just so we can say we did. As far as terraforming is concerned, it isn’t going to be possible.
Our main interest in Mars these days is to discover if there was ever an ocean there (because we don’t really know for sure how our ocean got on Earth) and did it ever support microbial life.
NASA does not want to “infect” Mars with our germs in case it destroys previous native life. Thus no humans in mass numbers and no terraforming.
Well,answered this very nicely. We don’t even know if the universe will still exist in 10 quadrillion years. As far as we know, the universe is between 12 and 14 billion years old. You can fit ten million billions in 10 quadrillion. So 10,000,000,000,000,000 years from now is thousands of billions of years more than the age of the earth is now. There will be no Sun or Earth. If the present rate of expansion of the universe continues, you will no longer see stars. If mankind somehow survived that, they would likely have evolved or devolved on some distant planet into something not resembling humans of today, and would have had to jump from solar system to solar system as millions of suns came and died. However, as billions of years goes by the stars get further and further away, making hoping from one solar system to the next more difficult.
Therefore it isn’t likely humans will exist by then, what to speak of the earth, the sun or even what remains of Andromeda and Milky Way merged and then dissipated.
Could we specialize in terraformation? It would be nice.
Unfortunately, focused or not, terraforming is not realistic. Look at Mars. The problem is not creating an atmosphere. The problem is keeping it and protecting people there from dangerous rays from the sun. You see, Mars has no organized magnetic North or South. Without a magnetic field the people there would die of exposure. Furthermore, without sufficient gravity to hold in the atmosphere, it would blow away by rays from the sun. Mars simply cannot be terraformed. It doesn’t matter whether you focus or not.
No reaction physically. Psychologically we’d be freaked out, but Haley’s comet is a small body that would have little gravitational effect on either large Moon or even larger Earth. It would zip by with no effect except to excite scientists and make headlines.