What are the limitations of present space travel? (thoughts please)?

there are no limits if you learn to astral travel......:0)

Speed! We don't have the technology to go any faster out there than we can now!

where there's a will there's a way

Launch vehicle cost, insurance issues, and a market lack for civilian space travel. With what we currently have available to us, getting anything into orbit is expensive. If the price could come down to that of an airline business class ticket, AND there was something worth the trip, then we would have more travel into space. Our travel to space is still in it's infancy, in large part due to a fear of space, and the high cost of getting there, even if that cost is actually a false, or overly inflated cost to keep a control on who goes and who does not.

It is not carbon neutral and we have bigger issues here to deal with!!

there is a great limit: light speed. All bodies can not travel more than 300,000 km per second. reaching to this speed need a lot of energy for us and now, with our technologies, we can't do this. So we can go only near earth places like moon, mars and other near places in solar system. but if Science solve this problem and we find some technologies to reach near this speed, we will have a great problem: Human adaptation.
Human physiological adaptation to the conditions of space is a challenge faced in the development of human spaceflight.
The fundamental engineering problems of escaping Earth's gravity well and developing systems for in-space propulsion have been examined for well over a century, and millions of man-hours of research have been spent on them. In recent years there has been an increase in research into the issue of how humans can actually stay in space and will actually survive and work in space for long periods of time. This question requires input from the whole gamut of physical and biological sciences and has now become the greatest challenge, other than funding, to human space exploration. A fundamental step in overcoming this challenge is trying to understand the effects and the impact long space travel has on the human body.

I think space travel like other important happenings in the world is not without purpose. A time may come when man may be able to make other planets habitable or man may succeed in finding another planet like ours where human life might be possible. At present space travel has its limitations and it might take a hundred years before man gets to really take advantage of space travel. The point I want to make is that we are guided by a higher power or intelligence and attribnute all the fantastic discoveries and inventions to this power. The world at present faces many challenges whether we manage to get on top of them would depend on this intelligence that has guided humanity for many millenia. Left to ourselves I don't hold out much hope for humanity.

alakeshwar