Billions of terrestrial Earth-size planets are estimated to exist around other stars in the Milky Way.
The Milky Way roars in the sky of northern Chile highlands, the Altiplano.
Spectacular view of the Milky Way above the Australia's most recognizable landform in silhouette.
The arc of the Milky Way, from Cygnus to Scorpius, rises above the shores of the Atlantic Ocean on La Palma, Canary Islands.
Stars of constellation Leo, Venus and Saturn shine onset of dawn over the relief of Ardashir I, the founder of the Sassanid Empire, Iran.
The Milky Way over the Lake of Fire (Lagoa_do_Fogo) in the Sao Miguel island of Portugal, Azores.
The Milky Way galaxy lights up the night above two ALMA radio telescopes 5,000 meters above sea level.
Our Milky Way galaxy gleams in all its splendor, as seen from La Silla observatory in Chile.
Spectacular view of the Milky Way above the Cerro Paranal Observatory, Atacama Desert, Chile.
The Milky Way appears above Mammoth hot springs in the Yellowstone National Park, Wyoming, USA.
Jupiter rises above a magnificent desert mesquite tree in the Death valley, California.
Star trails above a prehistoric illustrated tale. Engraved in rock, these ancient petroglyphs are abundant in the Teimareh valley of central Iran.
This heavenly red lotus is the Great Carina Nebula rising above 5,778 m Chiliques volcano in the Chilean Altiplano.
This 300-degree panorama from the top of La Palma, Canary Islands, shows the sky delights above the Roque de los Muchachos Observatory.
A bright meteor streaks the sky over ruins near the histroic city of Damghan. The image is made during the peak of 2011 Quadrantid meteor shower.
In the early evening sky the young crescent Moon meets with bright planet Venus.
Time-lapse video: As the evening twilight fades in darkness a group of sky observers and astrophotographers begins exploring the night sky.
Venus, Mars and Saturn set in the western horizon while they form a rare triple planetary conjunction.
A lot of things is going on in this 30-second exposure image. The young Moon, a bright meteor, and the orbiting space station.
As the night begins over this desert landscape near the date of annual Mars Hoax, planets Venus are in a triple conjunction with star Spica.
The crescent Moon and three planets sets in the western horizon of Alborz Mountains of Iran. Lights of a mountainous village is visible in far.
During 3 hours three planets and many stars trail above Milad communication Tower in Tehran with over 10 million population and a very light polluted sky.
Mars and bright star Regulus are in conjunction while Saturn is photographed at their left. The 2500-year world heritage Behistun (Bistun) relief is pictured in the foreground.
The Red Planet appears in close conjunction with bright star Regulus at the Leo's heart, both at the same brightness but with great color contrast.
Spring sky in the northern hemisphere is favorable for galaxy hunting. When this large panorama loads try to find as much as galaxies in the background sky.
Spring landscape of Alborz Mountains is illuminated by moonlight. Leo and planet Saturn rises from the east and shines brightly at opposition.
Constellation Leo, the Lion, Planet Saturn rises from the east and shines brightly at opposition.
In a moonlit night of desert planet Saturn shines in the constellation leo, rising above sand dunes.
The morning crescent Moon meets with planets Venus and Saturn as the color of autumn begins to change the nature.
In a desert starry night, a band of light appears crossing the sky.
An observer enjoys the gathering of the Moon,Saturn, Mars and star Regulus over the cityscape of Tehran.
High altitude slopes of the volcanic Mount Damavand (right end) turned to green.
Twilight panorama from west(right) to east horizon over Zagros mountains of Iran.
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