Wednesday, November 8, 2017

EarthSky News - Nov 8 - Small Ozone Hole This Year

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2017 ozone hole smallest since 1988
This year's ozone hole peaked in September at its smallest observed extent since 1988, due to an unstable and unusually warm Antarctic vortex in 2017.
2016 greenhouse gases at record high
As climate talks open in Bonn, Germany this week, negotiators are considering a report from the World Meteorological Organization, urging action now.
Want birds in your yard? Plant native trees
A recently published study confirms that native trees are most effective in hosting caterpillars, an important food for birds.
Tonight … Use Pegasus to find Andromeda galaxy
The Andromeda galaxy is the most distant object we can see with the eye alone. Try using the Great Square of Pegasus to find it in a dark sky.
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We sold out of these calendars quickly last year. Get yours now! P.S. They make great holiday gifts.

Use Pegasus to find Andromeda galaxy
You need a dark sky to see the galaxy. Can't find it this way? Try star-hopping from Cassiopeia.
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November sunset over Stainforth
Graham Telford captured this purple sunset on Saturday while he was fishing at Stainforth in the U.K.
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