Because to get to one of those planets you weed need to travel about 4 light years (The distance olight travels in a year). We can currently travel at about a thousandth of thwe speed of light, so unlesss you want to wait 4000 years, its not possible.
It would be impossible for humans to land on Jupiter, Saturn or Uranus. As a group, these planets are referred to as "gas giants". If any of them has a solid surface at all, it lies beneath thousands of miles of gas or liquid, in total dark and under temendous pressure.
no
In this galaxy, only Earth for humans. Mars may once have had life, but it is not habitable to humans. Astronomers and scientists have found planets somewhat similar to Earth, but they may not have all the conditions necessary for humans. We still know very little about these planets.
Earth
Other planets can't be inhabited by humans because they can't support life.They don't have an atmosphere with enough mixture of right gasses to sustain life.Other planets also don't have simple water in a consumable form.
It would be impossible to land on Jupiter, Saturn, Uranus, or Neptune because none of these planets have definite surfaces.
Th answer is not yet known. There are, at present, no known exo-planets which can be reached using current technologies for space travel, life sustainability and so on. It is possible that the technologies will increase our range and new exo-planets will be found. Personally, though, I believe that humans will destroy the earth by polluting it long before our science and technology can do that.
No one knows exactly as the first technologies predate modern humans by millions of years and it is impossible to know what our ancient prehuman ancestors were thinking back then.
Because humans are humans and every human that has ever lived has used at least hundreds of different technologies every day of their lives. The earliest humans used the technologies developed and used by their direct prehuman ancestors. Humans will always use technologies and develop improved technologies.
It would be impossible for humans to land on Jupiter, Saturn or Uranus. As a group, these planets are referred to as "gas giants". If any of them has a solid surface at all, it lies beneath thousands of miles of gas or liquid, in total dark and under temendous pressure.
The history of the planets had nothing to do with humans. Humans used the planets as religious symbols.
It explains why the planets remain in in orbit around the sun. Also, why moons orbit their planets. It also explains why humans remain on earth.
no
It explains why the planets remain in in orbit around the sun. Also, why moons orbit their planets. It also explains why humans remain on earth.
It explains why the planets remain in in orbit around the sun. Also, why moons orbit their planets. It also explains why humans remain on earth.
no
Technologies are what humans use to survive. Better technologies usually offer better means of survival and/or greater comfort in our daily lives. There are always cost/benefit issues with the introduction of any new technology, but need or not humans will always pursue the creation of new and "better" technologies: we create technologies and our technologies create us anew.