Comet Lulin, a two-tailed green-colored comet, makes its closest approach to Earth on Tuesday, Feb 24, 2009. [China Economic]
![Comet Lulin, a two-tailed green-colored comet, makes its closest approach to Earth on Tuesday, Feb 24, 2009. [China Economic]](http://images.china.cn/attachement/jpg/site1007/20090224/000bcdb95f1d0b0deb5226.jpg "Comet Lulin, a two-tailed green-colored comet, makes its closest approach to Earth on Tuesday, Feb 24, 2009. [China Economic]")