Monday, August 28, 2017

EarthSky News - Aug 28 - Two Years of Darkness?

August 28
Two Years of Darkness?
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Dark for 2 years after dino-killing asteroid?

Can you imagine a sky so laden with soot that all of Earth stayed dark for 2 years? New research suggests it happened, at the end of the age of the dinosaurs.

Tonight … Moon and star Antares

It looks like a dot of light near the moon. But the humongous size of this red supergiant star is truly difficult to fathom.

5-hour pinhole exposure of total eclipse

You might think you've seen all the eclipse images you want to see, but you haven't. Check this out!

Mystery of high-energy cosmic rays

Hold out your hand for 10 seconds. A dozen electrons and muons just zipped through your palm. These cosmic rays, scientists believe, come from violent explosions in deep space. A new ScienceCast video has more.
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Monday evening … Moon and star Antares

The 3rd object making a triangle with Monday night's moon is Saturn. The moon is closer to Saturn on Tuesday.
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5-hour pinhole exposure of total eclipse

This is a long-exposure photo of the sun, moving across the sky on August 21. Ian Hennes captured it with a lensless pinhole camera, in this case a beer can. It shows the total eclipse!
Submit your photo to EarthSky here!
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