Wednesday, August 2, 2017

EarthSky News - Aug 2 - Saturn Tonight, Safe Eclipse Viewing, Sun Rotation, Nearest Exoplanet

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Tonight … Identify Saturn near moon
Use the moon to locate the ringed planet Saturn as darkness falls. 

How to know your eclipse glasses are safe

Unscrupulous companies are printing ISO certification labels on fake eclipse glasses. How to know what's safe. If you purchased glasses from EarthSky, yes, they are from a reputable vendor, Rainbow Symphony.

Sun's core rotates 4x faster than surface

Eureka! After decades of puzzling about whether the sun's core spins faster than its surface, astronomers can now measure it.
No Earth-like atmosphere for Proxima b

It's the nearest exoplanet and in its star's habitable zone. But a new study suggests radiation from its star would drain an Earth-like atmosphere 10,000 times faster than on Earth.

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Tonight … Identify Saturn near moon
Miss 'em tonight? Try again tomorrow night.
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Anticrepuscular rays with rainbow
These 2 sky phenomena can appear separately. In this case, they appear together, both originating from the same source, the sun, on the opposite side of the sky. There are actually 2 rainbows here. See the faint one above the primary bow? Photo by Janice Reynolds.
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Tuesday, August 1, 2017

EarthSky News - August 1 - August Planets

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August guide to the bright planets

Jupiter and Saturn are easy to see in the evening. Dazzling Venus lights up the morning sky. Mercury sinks into the glare of sunset. Mars stays deeply buried in the glare of sunrise.

Tonight … Moon near star Antares

Antares is a bright, red star visible at this time of year. It was considered the Fire Star of the ancient Chinese.

Awesome beauty of the Eagle Nebula    

The Eagle Nebula - aka Messier 16 or M16 - is home to several famous structures, including the Pillars of Creation and the Stellar Spire.

M17 is the Omega Nebula

Near M16 on the sky's dome is M17, or Messier 17 - aka the Omega Nebula - visible through binoculars and glorious in a low power telescope.
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Tonight … Moon near star Antares

The planet Saturn is also nearby.
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Sun halo with 2 contrail shadows

The sun is casting shadows of an aircraft contrail downwards onto thin cirrus haze layers below. Higher above, ice crystals in cirrus clouds have created a 22-degree halo around the sun. Photo taken July 29, 2017 by Jüri Voit in Estonia.

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