Stargazers will be treated to a rare phenomenon on Tuesday night as the earth’s shadow passes over a supermoon creating a partial eclipse. The moon will appear full for about three days ...

First, it's a supermoon, meaning it will appear slightly ... This year, the harvest moon will officially be at its fullest on September 17 at 10:35 p.m. ET, according to NASA.

Just before the official first day of fall, you can celebrate the start of the season by viewing the September "Harvest Moon" — which will also be a supermoon this year. Here's when the larger ...