While astronomical seasons deal with the Earth’s revolution around the sun, meteorologists and climatologists combine the calendar and the annual temperature cycle to categorize the seasons.

Most people have heard the phrase, “once in a blue moon” when referring to something that doesn’t happen very often. But an actual blue moon is traditionally defined as the second full moon to happen in a single calendar month, and usually doesn’t have anything to do with the actual color of the moon. In this case, our second full moon, and now blue moon, will be on Halloween night. According to earthsky.org, that will happen next in the year 2048, when a monthly blue moon falls on Jan. 31, and a seasonal blue moon on Aug. 23. If you’re wondering, the next seasonal blue moon will be August 22, 2021.

Lovatics are finally getting a deep dive into the last three years of highs and lows for Demi Lovato. It was announced on Thursday at the ninth annual Newfronts that the 27-year-old singer had landed a new four-part YouTube docuseries. "I think for a while I tried to run away from some stuff. I tried to run away from the industry, tried to run away from what I felt like God wanted me to do," the "Changes" singer told Lovato at the time. So when we run away from that, we become less happy."