Sunday, November 3, 2019

Nov 3 - Giant Geode! Plus … November Planets

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A researcher stands inside the Pulpí geode, one of the largest documented geodes in the world, located at a depth of about 150 feet (50 meters) in a former silver mine in southeast Spain. Image via Hector Garrido.
Whoa! Check out this giant geode
Scientists recently studied the formation of the huge crystals inside the giant geode of Pulpí, located deep in a Spanish mine. They found that temperature fluctuations - maybe from climate or maybe from geothermal systems - amplified a natural process that grew the crystals, ripening them over thousands of years and making them literally crystal clear. Read more.
November guide to the bright planets
Saturn, Jupiter and Venus make a line after sunset. Mars rises in the east, shortly before the sun. The 2 brightest planets - Jupiter and Venus - will meet up for conjunction on November 24. Telescopic viewers using protective filters will see Mercury transit the sun on November 11. Read more.
Year's earliest solar noon is today
November 3 brings the earliest noon - or midday - of the year. Click here to learn what that means. Earliest solar noon is a harbinger of 2019’s earliest Northern Hemisphere sunset - and earliest Southern Hemisphere sunrise - happening before the December solstice. Read more.
What we’re reading

From The Atlantic … Why the search for dark matter depends on ancient shipwrecks
Errant particles from everyday radioactive materials are a major obstacle for particle physicists. The solution? Lead from the bottom of the sea. Read more.
EarthSky lunar calendars are back in stock

We're guaranteed to sell out, get one while you can! Your support means the world to us and allows us to keep going. Purchase here.
Watch for Taurid fireballs!
Skywatchers are still remembering the Taurid fireballs they saw in 2015. The Taurids appear to have a 7-year cycle of bright fireballs - which are just bright shooting stars, or meteors - and 2015 was apparently a peak year! Read more and see fireball photos from 2015. And what about 2019? We haven't heard of too many fireball-sightings from the Taurids this year. But you never know
Leaf season
View at EarthSky Community Photos. | Beautiful drone picture of Fort Mountain State Park in northwest Georgia, from our friend Scott Kuhn. Thanks, Scott! 
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