Comet ISON was discovered in 2012 by Russian astronomers using a telescope in Russia. As it gets closer to the sun, the comet will brighten and grow in size. When first sighted, Comet ISON was over 625 million miles from Earth and measured 18.8 on the magnitude scale, which is 100,000 times fainter than what the human eye can see.

1. Comet ISON

2. What is a Comet

3. Comet ISON
• Discovered by Russians
Vitali Nevski and Artyom
Novichonok using the
International Scientific
Optical Network
• It was first seen in pictures
taken by a 15.7 inch
reflecting telescope

4. NASA Deep Impact
Spacecraft
http://www.voanews.com/content/nasa-captures-first-im

5. When First Sighted
When first sighted it
was 625 million miles
away from earth in
the constellation of
Cancer

6. When First Sighted
It measured 18.8 on the reverse scale
(100,000 times fainter than the dimmest star
we can see with our eyes)

7. As it gets closer to the
sun...

11. Sources
http://www.space.com/17762-newfound-comet-dazzlin
http://apod.nasa.gov/apod/ap950826.html
http://en.wikipedia.org/wiki/File:Comet_P1_Mc
Naught02_-_23-01-07.jpg

12. This Thanksgiving