EarthSky News - June 30 - Happy Asteroid Day

June 30 Happy Asteroid Day by:

Today is Asteroid Day 2017  Yes, asteroids pose a threat to Earth, but they also represent untapped resources. Tune in to the Asteroid Day livestream and learn more. Top 10 things to know about asteroids For example, if all known asteroids were rolled into a ball, they'd still be smaller than Earth's moon ... except for 1 big one. Today in science: Tunguska explosion We celebrate Asteroid Day on June 30 because it's the anniversary of a 1908 explosion over Siberia that killed reindeer and flattened trees. Where's the moon? 1st quarter It officially happens tomorrow, but, if you live in the Americas, watch for a nearly 1st quarter moon tonight. It'll appear half-illuminated and near Jupiter! Tonight … 1st quarter moon with Jupiter They're the 2 brightest objects in the evening sky.

Buy 5 eclipse glasses get a free 2016 lunar calendar! While supplies last...A unique and beautiful poster-sized calendar FREE when you purchase 5 eclipse glasses.

1st quarter moon with Jupiter Clouded out tonight? Enjoy the moon and Jupiter Saturday evening, too!

Where's the moon? 1st quarter The Earth and moon are like mirrors to each other. If you were on the 1st quarter moon tonight, you'd see a last quarter Earth. Simulation of tonight's Earth viewed from the moon via Fourmilab. Submit your photo to EarthSky here!

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