Home / Science / The Blue Moon on Saturday is the last one until 2020 (do not miss it!)

The Blue Moon on Saturday is the last one until 2020 (do not miss it!)

Skywatchers beware: The last Blue Moon of 2018 is coming up. If you miss it, you have to wait until 2020 for the next one.

The upcoming Blue Moon – the name for the second full moon that appears in a calendar month – will rise on Saturday (March 31st). It will be the second Blue Moon of the year; The first took place on January 31, when we experienced the "Super Blue Blood Moon Lunar Eclipse".

If you're a Blue Moon fan, you should be eye-catching on Saturday; The next one will be released on Halloween night in 2020, according to the Weather Channel.

  A plane flies in front of the Blue Moon on July 31, 2015 in this photo, taken by Skywatcher Chris Jankowski from Erie, Pennsylvania.

A plane flies in front of the Blue Moon on July 31, 2015, shot by Skywatcher Chris Jankowski from Erie, Pennsylvania

Credit: Chris Jankowski

<img class = "pure-img lazy" big- src = "https://www.space.com/images/i/000/019/897/original/blue-moon-august-2012-120726b-02.jpg?1376950751" data-src = "https: // img.purch.com/w/192/aHR0cDovL3d3dy5zcGFjZS5jb20vaW1hZ2VzL2kvMDAwLzAxOS84OTcvaTMwMC9ibHVlLW1vb24tYXVndXN0LTIwMTItMTIwNzI2Yi0wMi5qcGc/MTM3Njk1MDc1MQ== "alt =" thought after an old English term, called blue 'to' traitor ', a blue moon is an extra full moon that occurs due to a Special feature of the calendar. [ See the full Blue Moon infographic here .] "Data-options-closecontrol =" true "data-options-fu llsize =" true “/>

Credit: Karl Tate, SPACE.com

Blue moons are not actually blue, and they do not look different from other full moon a The term, which has existed for hundreds of years, originally meant something absurd, but then referred to extremely rare events over time, wrote Philip Hiscock in an article for Sky & Telescope in 2012. (Interestingly a Blue Moon used to mean the third full moon in a season in which four of them were. This sense of an "additional" full moon has been transformed into the definition most people recognize today. Language is a slippery and changeable thing!) [19659002] But Blue Moons are not so rare: on average, they occur about every 2.7 years. Blue moons are possible because Earth's nearest neighbor needs 29.5 days to orbit our planet, but every calendar month (except February) contains 30 or 31 days

Editor's note: If you a stunning photo of the Blue Moon or any other heavenly destination and would like to share it with Space.com for a story or gallery, send pictures and comments to responsible editor Tariq Malik at [email protected]

Follow Mike Wall on Twitter @michaeldwall and Google+. Follow us @ Spacedotcom Facebook or Google+. Originally published on Space.com.

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