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Some experiments have shown that astronauts' body clocks do not work the same in space as on Earth. It is not known what causes this. It may be due to the work schedules the astronauts keep on a mission, or to changes in their sleep schedules. Also, being in a spacecraft orbiting the Earth, the astronauts no longer experience the 24 hour day/night cycle as they do on Earth. This could also ...

Ionizing radiation is the radiation in space that will adversely affect humans. This type of radiation, when absorbed in a living cell, ionizes atoms ...

It is hard to tell, because we are limited by the type of rockets and fuel we use now. Right now, we can travel about 25,000 mph in space. There are a lot of new ideas being studied which may enable us to go faster, but will we ever be able to travel at the speed of light? It is hard to say. There is a lot about getting to that speed that we don't know. We need ...

... , psychological or medical requirements. Early private spaceflights will probably require your doctor's permission, or recommend you not fly if you are pregnant or suffering from spinal or heart problems—similar to the cautions you see posted next to a ride at an amusement park. Flying into space at this point will not ...

... we will probably not be able to watch all our favorite TV shows, because there will not be enough TV channels being transmitted to us. The reception for the TV channels we will get, however, will be very good. We can bring along videos and video games, provided that we don't overuse our electricity. And there won ...

When we first encounter life in outer space we will need to be sure it is truly a life form. We might not even know it is alive because it will be very different. We will touch it, watch it and study the new life as we try to understand how it moves, eats and reproduces. Only after that would we try to ...

Oxygen will have to be brought to space in tanks. The oxygen tanks would be used to ... of oxygen and nitrogen (1:4) for breathing. This is what we call a shirt-sleeve environment, so there will be no need for air helmets or spacesuits when you are inside, unless there is an emergency. Any space modules we build must be air-tight, so breathable air will not leak out to space. With inflatable modules, there are multiple ...

... we eat it very carefully. We eat from plastic pouches, in which we cut small slits, and we often eat slightly sticky foods so that they will stick together and stick to our forks. We don ...

... of orbiting spaceport for LEO that would be similar to an airport here on Earth. We will likely need facilities in space to deal with the remoteness of human settlements and to ... with the great distances and times between various locations in space. It is likely that we will eventually want to create a gravity station that provides a more Earth-like gravity so ... are likely to be new problems that we have not even thought of yet which will require new solutions including, but not limited to, new facilities. We should expect some exciting surprises in ...

To go to the Moon the tools we will need rocket ships and space stations (although it can be done without the latter). We will need simple hand-held power tools for use around the base for construction and for fixing robots. Some tool will be needed to clean the carbon ... the oxygen, at least until we can get greenhouses started. We will need tools to prepare our food and deal with our wastes and clean the water. We will need tools to communicate with people ...

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