Comet Lulin was discovered in 2007 by a teenager in China. It is passing by the Earth in February 2009. Lulin looks green due to toxic gases.FOXNews.com: Strange Green Comet Passing by Earth Next Week (February 18, 2009) For those in United States, the comet was closest to Earth on the evening of February 23, 2009, but it can still be seen for a few more days.The Tech Herald: NASA's Swift Gamma-ray Explorer monitors comet Lulin (February 23, 2009) Lulin is probably on its way out of the solar system and might not be seen again from Earth.Fox News: http://www.foxnews.com/story/0,2933,498705,00.html (February 24, 2009)

Comet Lulin is passing the Earth in February 2009. In the United States, It can be seen to the right of Saturn, between the constellations of Virgo and Leo.Fox News: http://www.foxnews.com/story/0,2933,498705,00.html (February 24, 2009) It will be visible with the naked eye from dark locations the week of February 23. The comet will only look green from a telescope. The best view of the comet will be from February 23 to February 28.Sky and Telescope: Catch Comet Lulin at Its Best!

Comets are objects in the Solar System composed mainly of ice and dust. Their orbits are irregular. Their are followed by a trail of gas and dust. When they come inside the inner solar system, this trail becomes visible and is referred to as a tail, or coma. Meteors are debris from comets.

1. FOXNews.com: Get Ready to Spot Comet Lulin (February 24, 2009)

2. News-Press: Two-tailed Comet Lulin makes closest approach to Earth today (February 24, 2009)

3. Sky and Telescope: Catch Comet Lulin at Its Best! (February 24, 2009)

4. Scientific American: Best chance to view Comet Lulin is here! (February 23, 2009)

5. NASA: Green Comet Approaches Earth (February 4, 2009)

6. Wikipedia: C/2007 N3

7. Space Weather: Comet Lulin (C/2007 N3) photo gallery

8. YouTube Video: Comet Lulin February 2009 (Time: 3:06)