148
Humans have only been able to send spacecraft to explore space for
about 50 years. In that time, more than 100 robotic craft have travelled
into the Solar System to reveal what its planets, moons, asteroids, and
comets are like. They fly by, orbit, or land on these other worlds. Humans
have only been to the Moon, but aim to set foot on Mars in the future.Space exploration
Russian satellite Sputnik 1Alexei Leonov makes the first spacewalkApollo 8 orbits
the Moon
Valentina Tereshkova,
first woman in spaceYuri Gagarin, first
human in spaceApollo 11 lifts offSpacecraft explore
the major bodies
of the Solar SystemDog
inside
capsuleApollo 11^
crew return
to Earth in
command
module
ColumbiaIn orbit over
the MoonMan walks on
the MoonRe-entering Earth’s
atmosphereApollo 18^
with three US
astronautsMercury Atlas 5, with
chimpanzee Enos
on boardSputnik 2 takes
Laika the dog
into space148_149_SpaceExplore.indd 148 03/01/19 12:10 PM