Goddard was the first to develop technologies -- liquid fuel and two-stage rockets, for instance -- that would be necessary for space travel. However, these technologies would have been developed by others even if Goddard hadn't done so. German scientists, for example, developed these with no knowledge of what Goddard had done.
Space probes with no human crew.
space probes with no human crew
Robots.
The space shuttle is a reusable space vehicle; it goes into space and it comes back, and can be used again for futher missions into space. Whereas, previously space travel was done by rockets that could be used only once. The rockets would be used up after a single use. Shuttles, therefore, are the kind that can shuttle back and forth.
Space travel is done by means of rockets.
Astronauts are people who travel in space.
Because people have a desire to travel in space and live in space. Science also has a reason to be in space. Many experiment are done in space and the moon landings were an attempt to find out more about the places and things, which are possibly outside of Earth.
Goddard was the first to develop technologies -- liquid fuel and two-stage rockets, for instance -- that would be necessary for space travel. However, these technologies would have been developed by others even if Goddard hadn't done so. German scientists, for example, developed these with no knowledge of what Goddard had done.
Space probes with no human crew.
space probes with no human crew
Robots.
Many different experiments are done on the space station. There have been experiments done on Salmonella; Tethered Satellite System; seeing if a rose smelled different in space; building protein crystals; building films or materials in space; and studying nematodes in space.
So far, it hasn't been done yet.
I do believe that it has already been done.
I believe this has been done on the Bonneville salt flats. Google it.
entrants must stop and immediately exit confined space. If confined space has been ventilated, air in space must be monitored again before worker entry into the space.