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.
