Planet Earth at Blue Hour

Nature photographers and other fans of planet Earth always look forward to the blue hour.

Equinox: The Sun from Solstice to Solstice

Today is an equinox, a date when day and night are equal.

Eye Sky a Dragon

What do you see when you look into this sky?

Milkyway's Photographer

The Orion You Can Almost See

Do you recognize this constellation?

Lenticular Clouds over Mount Etna

What's happening above that volcano?

1901 Photograph: The Orion Nebula

By the turn of the 20th century advances in photography contributed an important tool for astronomers.

A Total Solar Eclipse Reflected

If you saw a total solar eclipse, would you do a double-take?

Birds During a Total Solar Eclipse

What do birds do during a total solar eclipse?

Astronomy Picture of the Day: Comet Wirtanen Passes by the Earth

Today Comet Wirtanen passes by the Earth. The kilometer-sized dirty snowball orbits the Sun every 5.4 years, ranging as far out as Jupiter and as close in as the Earth.