Page 239 - DK Children's Encyclopedia
P. 239

Space travel                                                                      SEE ALSO

                                                                                               ▸ ▸ Astronauts  p.31
                                                                                               ▸ ▸ Moon  p.171
           Space travel is how we explore the solar system                                     ▸ ▸ Exploration
           and learn about our place in the universe. Most space                                pp.180–181
           travel is done using robot spacecraft called probes.                                ▸ ▸ Radio  p.203

           The farthest in space that humans have traveled                                     ▸ ▸ Robots  p.212
           themselves is to the moon.                                                          ▸ ▸ Solar system
                                                                                                p.233
                                                  Humans in space
                                                    To get into space, people use super-
                                                     powered spaceships. Space shuttles like
                                                      Atlantis were used to take people into
                       The outside fuel                space for 30 years. Now people use           It takes a
                       tank is filled with
                       liquid hydrogen and             the Russian Soyuz spacecraft.           robot spacecraft
                       oxygen to power                                                        about six months to
                       the shuttle’s                                                             travel to Mars.
                       engines.
                                                                  Solar cells use
                                                                  the sun’s power
                                                                  to make the
                                                                  probe work.
                                                                                        Juno probe
                       Astronauts
                       sit in the
                       cockpit.


                                                                                                          Magnetometer
                                                                                                          measures
                                                                                                          magnetic fields.
                                                                                   Robots in space
                                                                                   Probes gather data using cameras,
                                                                                   magnetometers, and radars, then
                                                                                   send the data back to Earth.
                                                                 This booster
                                                                 rocket gives
                                                                 extra power.     Extreme environment
                                                                                  Space is not an easy place for people to be in.
                                                                                  It can be both extremely hot and cold. There
                                                                                  are dangerous rays from the sun and there is
                                                             Launch of the        no air to breathe. Spaceships and stations are
                                                             space shuttle        carefully designed to keep astronauts safe.
                                                             Atlantis














                                                                                      Astronaut Karen Nyberg washes
                                                                                     her hair on board the International
                                                                                             Space Station.


                                                             237





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