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)