Tuesday, November 24, 2009

outerspace






Define Astronomy: is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth's atmosphere (such as the cosmic background radiation).
(wikipedia.com)
Find an image of the big dipper,Orion, Cassiopeia,astrolabe:




Find a pic of the constellations:

What is the speed of light:
The speed of light per second = 299 792 458 m / s2
Describe why we should study stars?
because it helps us understand what we are made of and how we were made.
How are atoms made? find a good sight and give its link:
Atoms are formed from constituent particles, the measurement of which is difficult because they are affected by the measuring instruments. The elementary particles (neutron, proton, and electron) are theorized to be stable combinations of unstable, higher-energy
particles known as quarks. Quarks cannot be observed in normal matter because they rapidly combine to form other particles. (answers.com)
Did the ancients know that the earth was round?

yes

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