Where do we live?. Communities…States…Countries…Nations…
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Transcript of Where do we live?. Communities…States…Countries…Nations…
Where do we live?
Communities…Communities…
States…States…
Countries…Countries…
Nations…Nations…
Our Planet Earth
5.5 billion people
Most common language: Chinese
Our plant and animal species are currently undergoing the greatest rate of extinction in the last 65,000,000 years.
Our Solar System has 10 planets…
…numerous human made satellites and probes… and tonnes of space junk
…and humans, animals and plants that occasionally leave the earth on spacecraft.
Our Solar Neighbourhood
Our nearest star neighbour is Alpha Centauri - 4 light years away.
Our Local Group of stars is located in the Orion Arm of the Milky Way spiral galaxy.
The Orion Arm has 1,000,000 stars.
50+ planets discovered near other stars.
The Milky Way Galaxy
Our Sun is one of three hundred thousand million (300,000,000,000) stars.
Numerous other life-forms are almost a certainty.
Local Group of Galaxies
We live in a local cluster of about 30 galaxies.
The Andromeda Galaxy is the largest in our group.
The Virgo Super Cluster
Our Milky Way Galaxy is one of 2,000 galaxies in the Virgo Super Cluster.
Super clusters contain between 1,000 and 10,000 galaxies
… and numerous other astronomical objects
… and myriad other life forms
The Universe
Full of Super Clusters!
Act LocalAct Local
Think GlobalThink Global
Be Cosmic!Be Cosmic!
Images courtesy of
NASA NSSDC's Photo Gallery
NASA - Goddard Space Flight Center Scientific Visualization Studio.
More information
An Atlas of The Universe
Presentation by HENT
June 2003
