"You should become independent of the earth asap, when you look at which speed it all is being destroyed by its self-appointed masters."
"Planet 9" should have been discovered long ago, after all one can compute where its solar orbit should be, at least approximately. For what i see the orbits of the currently known planets or smaller objects have all been discovered and can be explained without the interference of another object ?
Mars can be colonised, but do you think humans will be able to do this without a war about territory? By technological aspects it could have been done earlier than 2010, but "priorities" .. (politics and military).
"Terraforming" is another thing and would take some centuries, provided scientists find out how to transform all kinds of matter into other chemical stuff.
There are several differing points of view regarding space and exploration. A lot say they are not interested in space and understanding the underlying science, since it does not have influence their daily life. Then there is religion and anxiety in a lot of science deniers.. I'd say if the right nova directs its gamma ray bursts towards Terra.. let's say if those uninterested prevail and have their say i would say humanity
will die out.
Cryogenic travel is interesting, but i think there are creatures better suited than just of all humans. You would have to get some antifreeze into the last cell before cooling it to or below zero degrees Celsius becaus ice chrystals will destroy biogenic matter. Even if the cells survive that physically, it is not sure if a brain subjected to such procedure will ever "work" again after this.
Going to ISS? Yes, anytime, as to Mars.
