Video: Rare supermoon lunar eclipse explained

On the evening of Sunday, Sept. 27, 2015, look out your window for a rare showing of a supermoon and total lunar eclipse. This will be the first time in more than three decades that we've seen this combination.
Up Next
On the evening of Sunday, Sept. 27, 2015, look out your window for a rare showing of a supermoon and total lunar eclipse. This will be the first time in more than three decades that we've seen this combination.