Stars emerge from the evening twilight in a partly cloudy night of the Horseshoe Bend in Arizona.
On this morning twilight winterscape of 2016 Feb 6 a celestial triangle is formed by triple conjunction of Moon, Venus, and Mercury.
On this frozen morning twilight the winterscape appears with the moon and planets Venus and Mercury, just before disappearing in the dawn.
The moon, morning twilight, and city lights can't hide the Milky Way in this nightscape over Oman Grand Canyon.
The new moon with the Earthshine above a towering Cumulus cloud.
A Galactic Evening on La Palma, Canary Islands.
The twin Keck telescopes beam lasers to the atmosphere on Mauna Kea, the top of Hawaii.
Spectacular view of the Milky Way above the Australia's most recognizable landform in silhouette.
The Milky Way in the fading evening twilight over a misty forest meadow near Lich, central Germany.
The Milky Way in the morning twilight from altitude of 5,000 meters on in the Chilean Andes.
The Milky Way at dawn from altitude of 5,000 meters on Chajnantor Plateau in the Chilean Andes.
Artistic presentation of an aurora outburst includes over 600 fisheye images taken during 2 hours.
Photographed from the Canary Island of Fuerteventura, this bright Full Moon rose at sunset.
Morning twilight and spring landscape of Tenerife's high altitude areas on the slopes of Teide volcano.
The night sky at dawn over the Grand Teton National Park in Wyoming, USA.
Evening twilight fades to a starry night above the Grand Teton National Park in Wyoming.
The southern sky is photographed in the morning twilight above a road approaching Cerro Paranal Observatory in Chile.
The Milky Way in the morning twilight over the Yellowstone National Park, a World Heritage Site in Wyoming, USA.
The Moon and bright star Capella appear in the morning twilight over Yellowstone Lake and a deep geothermal pool of a hot spring.
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