In the final hours of Christmas Day, the sun fired off four solar flares within less than three hours.

The biggest flare of the series, recorded at a M7.3, erupted from sunspot region AR3938 on Dec. 25 at 10:15 p,m. EST (0315 GMT on Dec. 26). Solar flares are ranked and categorized by their power on a 4-level classification scale, with M-class the second strongest to the beastly X-class at the top.

According to Spaceweather.com, this was part of a group of four different flares that happened within two and a half hours coinciding with three sunspot regions — AR3938, AR3933, and AR3936. In footage of the sun taken during time period, it looks like the lights twinkling on and off on a Christmas tree.