The newfound Comet P1 (Nishimura) passes its closest point to Earth on Tuesday (Sept. 12). Here's how to see it this week before it's gone for 400 years.
See Comet Nishimura at its closest point to Earth this week. It won't visit again for 435 years. : Read more
See Comet Nishimura at its closest point to Earth this week. It won't visit again for 435 years. : Read more