Our Universe!

ME!

My House

Cambridge

Canada

North America

Earth

Solar SystemThe Sun

8 planets (pluto – dwarf planet)

62 moonsthousands of asteroids, comets, meteorids, space rocks and bits of space dust;

Milky Way Galaxy

• Huge city of stars;• Very large in size – travelling at the speed of

light (300 000 000 m/sec) it would take 100 000 years to travel across it;

• 100 000 million stars;• Gets its name from the lovely ribbon of light

that forms across the night sky;

Local Group of Galaxies

• Group of galaxies that contains approximately 20 bright galaxies and 30 galaxies in total;

• Largest galaxies in the local group are spirals Andromeda and Milky way

The Universe

• Billions of galaxies;• Galaxies are clumped together in clusters;• Farthest radio signals from a galaxy came from

12 billion light-years away;• Scientists believe the universe stretches out far

beyond what we can see;• Theory – parts of the universe may look very

different from ours and may even have different laws of nature;