[Skybird]

Originally Posted by Kapitan

First up there is the mathematical evedence to support a planet 9, apparently this would be a planet that is eTNOs and is orbitting around 250 times more distant than the distance between the earth to the sun, and the planet would be around 5-10 times the mass of earth with a 20,000 year orbit of our sun.

Some have suggested that infact theres no planet 9 but rather a black hole in place, in anycase which do you think is the most probable?

Planet Nine is a hypothesis that got postulated to explain certain anomalies in the orbital behaviour of objects in the outer parts of the solar system. As a hypothetical construct, it does righ that, but AFAIK we have no material hints and evidences for a nineth planet'S existence. However, the Sumerians postulated the existence of a big stellar object beyond the orbits of the known planets, but it is not clear what they imagined this object to be like by nature and identity: a deity, a planet, a comet, an artifical object. However, they seem to have thought that it was ver yhuge, means: had plenty of mass. Nibiru has been object of many UFO-hunter's phantasies.

Human on Mars, our planet aligns with Mars every 24 months, i find it highly likely we will see a human on Mars in my life time (yes im excited i want to go myself) but do you think the current proposed 3 year long mission will work? i do think it would be a bit much with no infrastructure for the astronaughts.

When I was young, I was attracted by such ideas, today, I find them more scary. Its, by all what we know, a dead piece of desolate sand and rock. The idea to be the only man on it, these days only holds a strong feeling of isolation and loneliness for me. Most of the cosmos, if not all, is lifeless, desolate and compeltely desinterested in man, nevertheless space is extrneely hostile and lethal to any form of life. I take no longer any comfort from such adventure stories. It was not always like this, but now it is.

I do not believe anymore in man "colonizing" moons or planets in this solar system. A small handful of specialists living in tiny tin capsules and wearing space suits before leaving the house, is no "colonization", but just an individual survival experience. Also, we have no fail-safe technology. In fact, yur technology is extremely vulnerable, still.

As long as it is voluntary onkly, however, I will not stop anybody daring to try himself out on such a mission.

The movie by Ridley Scott, The Martian, I consider to be very unrealistic and HOPELESSLY overoptimistic and extremely technology-affine. Its a dream. Reality just waits to shatter it, if you provide it an opportunity. Murphy'S Law says that in principle everything that could happen, sooner or later will happen, if you give it the time needed. That may be true for the happy ends, too. But its also true for the accidents and tragedies. I do not want to find out.

Also, developments here on planet Earth imo speaks against it.

I also have a feeling Elon Musks proposal of 1 million to Mars is a bit far fetched for 2100.

A bit...? Completely!

Another thing about mars is that the surface is very cold so do you think we could create a habitable planet? we know how to warm up a planet thats for sure we do it to our own but in a few hundred years could we create a atmosphere and change the Mars planet into one similar to earth ?

I do not know if we could do it, but I am quite certain that we will not do it and succeed. I am a fundamental realist - means: pessimist - these days when it comes to the outlook for human civilization. And that civilisation is the precondition for survival and technological adventures olike what you talk aboiut here.

Cryogenic travel, well there was another proposul about cryogenically freezing humans to perform extremely long missions, i'm mixed on the idea because id like to live on earth a bit longer and i would probably be in old age when i got frozen which is no good in my view, the humans that would need to be frozen would need to be around thier 30's and in A1 health thats my view.

Yes. Daredeviling and adventure and conquest are for the young, the specialised and the strong. Old, weak people are ballast in such and endavour. A burden for the others. A risk to the mission.

A trip to the ISS yes its high on my list but right now unaffordable, but with the ISS due to decommission in 2024 its highly likely for some time atleast that the space station will hold tourists, the question is how much money will each person spend to get there (im getting quotes of $55m USD)
Of course id love to go to the ISS but id also love to go to the Moon and Mars do you think by 2050 good ol Elon will have come up with something so we could travel to these two places?

Short time tourism in orbit, even a small hotel-kind of destination on Moon, i could imagine. also robotic ressource mining on Moon. You may want to read Frank Schätzing's 1000 pages novel "Moon", it plays with this scenario in a crime story setting. A typical Schätzing, I tend to like his novels.