EarthSky News - Oct 31 - Happy Halloween!

October 31 Happy Halloween!

Halloween is an astronomical holiday Halloween is a cross-quarter day - midway between the autumn equinox and winter solstice. Farthest moon of 2016 today A waxing crescent, farthest from Earth for this year. In 2 weeks, we'll have the closest moon since 1948. It'll be a full moon and a supermoon. Tonight … Halloween ghost of the summer sun At Halloween - and a few days before and after - the bright star Arcturus sets at the same time and on the same spot on the horizon as the summer sun. Check out fast-spinning 'pumpkin' stars These stars produce X-rays at 100 times our sun's peak levels. They spin so fast they've been squashed into pumpkin-like shapes. Here are 3 amazing spider skills Halloween time is spider time.  Three amazing feats of spiders you might not have known about. 2017 EarthSky Lunar Calendar pre-sale...is happening NOW! Order now to receive $5 off per calendar, during the presale period.  Plus…spend $100 at our store and receive an additional 20% off your entire order if you use the code EARTHSKY at checkout!  Pre-sale orders will be shipped beginning November 15. Thank you for helping EarthSky to keep going! Click here to order now.

today's image Airglow over Sweden Airglow is the light of excited atoms, high in Earth's atmosphere. Photo by Stefan Nilsson in Åhus, Sweden.

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