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Aurora Borealis, northern or southern light

61 files, last one added on Apr 09, 2016, 3 linked files, 64 files total
Album viewed 1144 times

Noctilucent clouds (also called Polar Mesospheric Clouds) are 80-85 km high (50-53 mile) a few km below the mesopause, the coldest part of the atmosphere.
NLCs are comprised of extremely small ice crystals 1/10,000 mm. in diameter.

89 files, last one added on Jun 17, 2017, 2 linked files, 91 files total
Album viewed 498 times

Nacreous clouds are a type of Polar Stratospheric Cloud (PSC)

2 files, last one added on Jan 19, 2011
Album viewed 235 times

Iridescent Clouds

3 files, last one added on Sep 15, 2010
Album viewed 258 times

The zodiacal light is not part of our atmosphere, it is produced between the planets, it´s the scattering of sunlight by dust particles.

9 files, last one added on Apr 19, 2013, 2 linked files, 11 files total
Album viewed 289 times

Airglow. Earth’s nightside sky is never completely dark. Long after sunset and even with no interference from artificial lights, moonlight or aurorae the sky has a soft glow.

8 files, last one added on Oct 02, 2016, 2 linked files, 10 files total
Album viewed 270 times

Sun- and moonhalos, arches, pillars, sundogs etc.

31 files, last one added on Feb 14, 2014, 7 linked files, 38 files total
Album viewed 358 times

Coronae are produced by the diffraction of light by tiny cloud droplets or sometimes small ice crystals.

5 files, last one added on Apr 09, 2012
Album viewed 232 times

Green Flash

8 files, last one added on Jul 23, 2012
Album viewed 270 times

Rainbows, moonbows, dewbows etc.

11 files, last one added on May 22, 2010, 1 linked files, 12 files total
Album viewed 265 times

Lightning, and other weather phenomena

14 files, last one added on Aug 16, 2015
Album viewed 320 times

Lights in the sky, caused by spacecrafts (ISS), planes, balloons, satellites (Iridium Flares) etc.

11 files, last one added on Dec 06, 2008, 4 linked files, 15 files total
Album viewed 293 times

Other atmospheric or optic phenomena

32 files, last one added on Oct 11, 2015, 5 linked files, 37 files total
Album viewed 820 times