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Astronomy Picture of the Day: Sea and Sky Glows over the Oregon Coast

Every step caused the sand to light up blue. That glow was bioluminescence -- a blue radiance that also lights the surf in this surreal scene captured last month at Meyer's Creek Beach in Oregon, USA.

Astronomy Picture of the Day: The East 96th Street Moon

A very full Moon rose over Manhattan's Upper Eastside on June 28, known to some as the Strawberry Moon.

Astronomy Picture of the Day: Highlights of the Summer Sky

What can you see in the night sky this summer?

Astronomy Picture of the Day: Rocket Plume Shadow Points to the Moon

Why would the shadow of a space shuttle launch plume point toward the Moon?

Astronomy Picture of the Day: Northern Lights and Noctilucent Clouds

Skies after the near-solstice sunset on June 17 are reflected in this calm lake.

Astronomy Picture of the Day: Six Planets from Yosemite

The five naked-eye planets, Mercury, Venus, Mars, Jupiter and Saturn, have been seen since ancient times to wander the night skies of planet Earth.

Astronomy Picture of the Day: Aurora and Manicouagan Crater from the Space Station

How many of these can you find in today's featured photograph: an aurora, airglow, one of the oldest impact craters on the Earth, snow and ice, stars, city lights, and part of the International Space Station?

Astronomy Picture of the Day: Coronal Rain on the Sun

Does it rain on the Sun? Yes, although what falls is not water but extremely hot plasma.

Astronomy Picture of the Day: Night Sky Highlights: March to May

What might you see in the night sky over the next few months?

Astronomy Picture of the Day: Flying over the Earth at Night II

What would it be like to orbit the Earth?

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