Solvin Zankl / English oak tree (Quercus robur) silhouetted against orange sky with star trails, Nauroth, Germany, October.
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Charlie Summers / The transit of Venus across the face of the sun, with visible sunspots, as seen from Aurora, Colorado, USA, 19.51 local time, 5 June 2012.
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Charlie Summers / The transit of Venus across the face of the sun, with visible sunspots, as seen from Aurora, Colorado, USA, 16.24 local time, 5 June 2012.
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Charlie Summers / The transit of Venus across the face of the sun, with visible sunspots, as seen from Aurora, Colorado, USA, 18.01 local time, 5 June 2012.
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Charlie Summers / The transit of Venus across the face of the sun, with visible sunspots, as seen from Aurora, Colorado, USA, 16.33 local time, 5 June 2012.
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Oriol Alamany / Transit of the planet Venus acros the Sun, image taken from Barcelona, Spain, 06.38, 6 June 2012.
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Oriol Alamany / Transit of the planet Venus acros the Sun, image taken from Barcelona, Spain, 06.36, 6 June 2012.
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Aflo / Y-10105 Bright sun setting in evening, Hawaii, USA
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Aflo / Y-10101 Bright sun in orange sky
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Aflo / Y-10106 Bright sun setting in evening
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Aflo / Y10201 Bright sun setting in evening above ridge
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Aflo / Y-10202 Bright sun shining from behind clouds
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Aflo / Y-10003 Sun sinking below horizon over sea
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Aflo / Y-9901 Bright sun setting in evening above clouds
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Sue Daly / Striped sun star (Solaster stimpsoni) on seabed, Pacific coast, Canada, August
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Fred Bavendam / Orange Sun Star (Solaster stimpsoni) warding off the attack of a much smaller Morning Sun Star (Solaster dawsoni), British Columbia, Canada
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Norbert Wu / Frilled Sea Anemone (Metridium senile) group, Leather Star (Dermasterias imbricata) and Orange Sun Star (Solaster stimpsoni), Vancouver Island, British Columbia, Canada
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Alex Mustard / Detail of gills on the surface of a large Sun star (Solaster sp.), Browning Pass, Vancouver Island, British Columbia, Canada, Pacific Ocean.
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Franco Banfi / Yellow sun seastar (Solaster endeca) and Dead man's finger (Alcyonium digitatum) on rock, Trondheimfjord, Norway, North Atlantic Ocean.
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Marie Lochman / Star orchid (Thelymitra stellata) Northern Sandplains - Midwest, Western Australia. Western Australian endemic
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David Hall / Morning sun star (Solaster dawsoni), Browning Pass, Queen Charlotte Strait, British Columbia, Canada. May.