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Chasing the eruption of Volcán de Fuego
Dramatic nighttime view of Volcán de Fuego, an active stratovolcano in Guatemala, taken this past weekend.
January 5, 2016
Spectacular new image of earthrise
A new earthrise photo, as seen from the moon by the Lunar Reconnaissance Orbiter.
December 30, 2015
Sun halo over South Pole
High, thin cirrus clouds create halos around the sun or moon. This one is over Antarctica, at a time when the sun is shining 24 hours a day.
December 29, 2015
Venus and Saturn before sunrise
Saturn is becoming easier to see before dawn, below Venus in the east. Soon, all five visible planets will appear in the dawn sky simultaneously.
December 27, 2015
Amazing airglow over Atacama Desert
The sun's ultraviolet radiation excites atoms some 50 miles (80 km) or more high in Earth's atmosphere. When the atoms release the energy, the atmosphere glows.
December 25, 2015
Long midday shadows, near solstice, in Greece
Noontime sun near the December solstice, over the Acropolis in Athens, Greece. Notice how long everyone's shadow is.
December 22, 2015
Saturn, returning before dawn
An early capture of the planet Saturn, which passed behind the sun on November 30, 2015 and has now returned to the predawn sky.
December 21, 2015
Look for elusive Mercury
The sun's innermost planet is back in the evening sky. Watch for it in the west, as soon as the sky begins to darken.
December 18, 2015
