Feb 21 - Earth's Atmosphere Extends Beyond Moon

February 21 Earth's Atmosphere Extends Beyond Moon by:

Help EarthSky keep going ...  We're at 58%! It's been an exciting week. Gratitude to all who've donated. We still have a long way to go to reach our goal. Can you help? We need you. Click to donate and learn more.  The outermost part of Earth's atmosphere - called its geocorona - extends outward almost twice as far as the moon's orbit. Artist's concept via ESA. Earth's atmosphere extends beyond moon In fact, these researchers said, the moon flies through Earth's outermost atmosphere. Read more. The ozone hole is recovering After thinning at alarming rates in the 1980s and 90s, the ozone layer over Antarctica is starting to recover, thanks to human intervention. Take 2 minutes see for yourself how ozone concentrations have changed from 1979 through 2018. Watch video. Firefall at Yosemite National Park Around this time of year - if the western horizon stays clear - the last few minutes of daylight fall perfectly on Yosemite's Horsetail Falls, making it glow as if on fire. Photographers call it the firefall ... Read more. @MikeMezPhoto caught the firefall this week. Thank you, Mike!

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Tonight … Zodiacal light, a glowing pyramid after dark From the Northern Hemisphere, look after true darkness falls for the elusive zodiacal light. It appears as a hazy pyramid of light extending up from the sunset point. Southern Hemisphere? Look before dawn!

How to spot Canopus, sky’s 2nd-brightest star Project Nightflight, a Vienna-based astrophotography group, caught Canopus over the island of La Palma in Spain’s Canary Islands. Read more. Submit your photo to EarthSky here! Did a friend forward EarthSkyNews to you? Click here to get your own subscription!

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