Page 265 - DK Children's Encyclopedia

Universe SEE ALSO

▸ ▸ Atoms p.34
▸ ▸ Big Bang p.37
The universe is everything around us: matter, energy, and ▸ ▸ Earth p.83
space. This means the Earth, the solar system, the Milky ▸ ▸ Galaxies p.116
Way, and other galaxies are part of the universe. The ▸ ▸ Milky Way p.167

universe is very big and is always changing. ▸ ▸ Solar system
p.233

Where are we? Universe
The universe is so huge that it is The universe is made
up of billions of galaxies
hard to understand. This diagram that cluster together,
shows how Earth fits with the with huge empty spaces
rest of the universe. between them.

The universe has The Milky Way
no center, and is The solar system
filled with galaxies in all orbits the center
directions—it goes of our home
on forever. galaxy, which is
known as the
Milky Way.

The solar system
The sun and its
family of planets
are known as the Scientists thought the
solar system. Milky Way was the only
galaxy until the early
20th century.
The Earth
Our planet is one
of eight planets
that move around Dark matter
the sun. Scientists think that dark matter is made of
particles smaller than atoms. Dark matter
is invisible to us, but we know it exists
because its force of gravity pulls nearby
space objects toward it.
Earth was thought
to be the center of Visible
the universe until matter
the 16th century. 20
percent
Dark
City landscape matter
Our planet is home to 7 billion 80
people living in towns, cities, percent
and the countryside.
263

US_263_Universe.indd 263 16/05/2017 09:51