Third and final Supermoon of 2016 rises tonight: What to expect

The December full Cold Moon will rise tonight (Dec. 13), marking the third and final supermoon to grace the sky in 2016. Tonight's moon will be up to 14% bigger and 30% brighter than an average full moon. If you've been enjoying the Geminid meteor shower, there's a bit of bad news – the supermoon tonight will likely be so bright that it'll make those meteors harder to see. A webcast featuring live views of the supermoon will be available online through the Virtual Telescope Project, starting at 11 a.m. EST. This will be the last time to see a Supermoon for a while: There won't be a perigee full moon in 2017 because the full moon and perigee won't realign again until Jan. 2, 2018, according to EarthSky.org.