Friday, July 7, 2017

EarthSky News - July 7 - After-Death Planets

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How do planets form after star death?

Supernova explosions destroy pre-existing planets. Yet astronomers observe planets orbiting tiny, dense, essentially dead neutron stars left behind by supernovae. How do the planets get there?

Tonight … See the moon, Saturn and Antares in a line
Golden Saturn, 6th planet outward from the sun, is the farthest world you can see easily with the unaided eye. Antares is a bright, reddish star.
Friday FAQ: How do I see anticrepuscular rays?
You've heard of crepuscular rays? Here's how to catch a glimpse of elusive anticrepuscular rays. 
If greenhouse gas emissions ended now...
Would climate change stop? The simple answer is no. A climate scientist explains.
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See the moon, Saturn and Antares in a line
All 3 travel along the ecliptic, a projection of Earth's orbit onto the sky. 
How do I see anticrepuscular rays?
Next time you see crepuscular rays - sunrays - at sunrise or sunset, turn around. Photo by Karl Diefenderfer in Quakertown, Pennsylvania.
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