TONIGHT: Rare sky show with supermoon, eclipse

<p>If you&#39;ve waited your whole life to see a supermoon lunar eclipse, you&#39;re in luck. If you have no idea what I&#39;m talking about, let me explain.</p><p>Mark your calendars for Sept. 27 if you&#39;re on our side of the planet, and Sept. 28 if you&#39;re overseas, because all of us earthlings are in for a treat.&nbsp;</p><p>Well, either that, or we&#39;re doomed.</p><p>According to online posts by religious theorists, the supermoon lunar eclipse also lines up with an asteroid apocalypse.</p><p>There&#39;s also the&nbsp;<a href="http://bloodmoonprophecy.com/" target="_blank">Blood Moon prophecy</a>. Followers of this prophecy think a pattern of moon events, including the one this weekend, signal the end of the world as it is described in certain passages of the New Testament. Luckily, according to a NASA manager, we should be in the clear.</p><p>That&nbsp;<a href="http://www.forbes.com/sites/ericmack/2015/08/21/youtube-says-big-asteroid-will-hit-earth-next-month-nasa-disagrees/" target="_blank">manager told Forbes</a>, &quot;There is no scientific basis — not even one shred of evidence — that an asteroid or any other celestial object will impact Earth on those dates.&quot;</p><p>Well, good.&nbsp;</p><p>Back to the science behind the supermoon lunar eclipse. There are two players in this game. One is the supermoon. A moon is considered &quot;super&quot; when a full moon reaches the closest point to Earth on its elliptical orbit. This makes it appear about 14 percent larger and about 30 percent brighter.&nbsp;</p><p>The other player is the lunar eclipse. These happen fairly often — just not at the same time as a supermoon. A lunar eclipse happens when the moon passes directly behind the Earth into the shadow the planet casts from the Sun. (Video via&nbsp;<a href="https://www.youtube.com/watch?v=vKAw_wrIr5s" target="_blank">NASA</a>)</p><p>Two-for-one sky shows like these are rare. It&#39;s only happened five times since 1910, and scientists say it won&#39;t happen again until 2029.</p><p><a href="http://earthsky.org/?p=51212" target="_blank">According to Earthsky.org</a>, if you&#39;re in North America, you should head outside around 9:07 p.m. Eastern time to see the start of the show.</p><p><i>This video includes images from Getty Images and&nbsp;</i><a href="https://www.flickr.com/photos/halfrain/7002252170/in/photolist-bELnBG-9rH8BW-oqTdUe-f7cSp7-bEUdmj-aTptNV-oikmv5-eTijfs-bTNRiP-oDq8My-oGArfi-9rUGWb-o9qQ7X-eTPBBD-9uLpFe-qjjKLK-bEXwR1-9rULDs-oqTdxH-9rREwa-9rNmg8-9rRjru-9rRjqA-oGNupF-onTGGW-ophUCE-bTLMig-ooPExM-9rWWmh-eVc3yN-oqTde6-9sc8yz-9rSAth-oEFgQE-9rDFWa-9rKomP-9sj5dM-9rBHWU-oEgWRz-9rBK98-ooz9k3-9rDMwp-9tdHFi-eUWTXh-eUKzfV-eUKze8-eUWUhh-eUWUeY-eUWU9h-eUKyZ2" target="_blank"><i>halfrain / CC BY-SA 2.0</i></a><i>&nbsp;and&nbsp;</i><i><a href="https://www.flickr.com/photos/gsfc/15635699388/in/photolist-pPF3FW-q6zdAW-kXru1-pPF3Eo-dCi5Rh-oa8e7-7Ne2DV-ohDJLr-85T6gD-48oYFR-dCcEK8-8FmrvY-7XM48f-pPGhuz-7XM3H7-6oGVgc-6wyKJK-5nhnt4-aim8dX-q6gwaZ-anCUPE-bX3vGJ-e218cS-ezqReD-8P6zGo-pP1SRx-pPHYBj-pPD1eg-5gmArp-oM9Ap4-8tzBGf-5i6ydB-bBhSJ4-8TWp2c-3EFmMm-rN5F4E-8tzBP7-dV1GTi-8tzC4f-eeEcv4-9ishak-7XHD4z-7XLUnC-7XHCDV-7XLTXG-abANmb-7HSMFm-4w8GNE-6DEeoh-7HSMqs" target="_blank">NASA / CC BY 2.0</a></i><i>.</i></p>