Wednesday, April 19, 2017

EarthSky News - Apr 19 - Close-Passing Asteroid Bigger Than Expected

April 19
Close-Passing Asteroid
Bigger Than Expected
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Asteroid 2014 JO25 bigger than expected

It's coming closer today than any asteroid this large since 2004. It came into view of small telescopes a few hours ago. Early radar observations indicate it's bigger than we thought.
Cassini to begin Grand Finale
One week from today, the spacecraft will make the 1st in a series of dives through the gap between Saturn and its rings.
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Celebrating science and the sky
Earth Day and the March for Science, April 22. International Dark Sky Week, April 22-28. Links and resources for all 3, here.
Tonight … Big Dipper to Polaris and Little Dipper
So you say you can find the Big Dipper, but not the Little Dipper? This post is for you.

EarthSky Lunar Calendars are on sale 50% OFF

A unique and beautiful poster-sized calendar. Keep up with all phases of the moon every night of the year. Only about 100 left in stock, get them while you can!

Close-passing asteroid 2014 JO25

Radar observations of asteroid 2014 JO25 using the Arecibo Radio Telescope in Puerto Rico indicate it is double-lobed and nearly a mile (1.3 km) long. Image via Planetary Radar Science Group. Click in to see this image as a movie.

Tonight … Big Dipper to Polaris and Little Dipper
So you say you can find the Big Dipper, but not the Little Dipper? This post is for you.
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