Astronomy Earth’s Place in the Universe 2. Astronomy Earth’s Place in the Universe 2.

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Presentation transcript:

Astronomy Earth’s Place in the Universe 2

Warm Up What do you think of when you hear astronomy? What are you the most curious about in astronomy? What do you know about astronomy?

What is Astronomy? The science that studies the universe that deals with Properties of objects in space Laws under which the universe operates 4

Universe is made of galaxies which are made of many stars.

Some stars have planetary systems similar to our solar system Some stars have planetary systems similar to our solar system. Earth is a satellite planet of one particular star

Hierarchy of the Universe Universe- everything that exists Galaxies- contain stars, other remnants, and sometimes planetary systems

Hierarchy of the Universe Star- A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun

Hierarchy of the Universe Planet- an astronomical object orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.