Dust bunnies!

Dust just gets everywhere - NGC 1316, from Hubble

Interaction

Beautiful and strange, a ring around a galaxy - NGC 4650A, from Hubble

Not the center

This is how we knew Earth wasn't the center of the universe - Jupiter and its four largest moons

South Pole

A webcam from one of the most intriguing places on Earth - the Amundsen-Scott South Pole Station

Never Enough

This planetary nebula is so spectacular, I never get tired of looking at it - NGC 2392, from Hubble

This is why

People inclined to believe in conspiracies ask, "With Hubble, shouldn't there be images of the flag left on the Moon?" The answer is, "No." - the Moon, from Hubble

Edges

A tiny world seen in the ring-plane - Saturn's rings and moon Janus, from Cassini

The Hat

On edge - the Sombrero galaxy, from Hubble

View from Work

And my office doesn't even have a window - astronauts Grunsfeld and Linnehan with Hubble, from Columbia

Sunset

Perspective on a different world - mountains on Io at sunset, from Galileo

Chaotic

Tumbling helplessly - Hyperion, from Cassini

Fill

Possible past glacial activity - filled-in craters, from Mars Express

Beyond Imagination

There are some objects out there that I would not have imagined - Hoag's Object, from Hubble

Perspective

Something we don't have - Titan and Dione, from Cassini

Fear

Fear, in color - Phobos, from Mars Express

So Much

It always amazes me how much can be learned from an image - Saturn's thin rings and two of its moons, from Cassini

Dust Devils

Previously only seen from above - dust devils in Gusev Crater, from Spirit

Blue

For the same reason as the sky is blue - reflection nebulae and stars, the Pleiades, from Hubble

Not so fiery

In myth, his breath formed the fires of Mt. Etna, but his is an icy world - Enceladus, from Cassini

Mundane

I think that's what is so appealing about this image - roving on Mars, from Spirit

Unleashed

It is said that this place gets hit by more lightning strikes each year than anywhere else in the United States - nature's wrath at Kitt Peak National Observatory, by Adam Block

A Dark Place

It is difficult to imagine such a dark place, able to obscure the brightness from around it. But those dark places exist - Barnard 68, from the VLT

Complexity

Rich textures and a long history of activity - evidence of flooding on Mars, from Mars Express

Destruction

Think these galaxies know of their impending doom? - the "Mice", from Hubble

Bruised

Some call this the "Black Eye" galaxy - M64, from Hubble

Moon over Seattle

Lots of science hidden in this one - Moon rising over Seattle

Broken Heart

This dark nebula looks like a heart on its side - reflection nebula NGC 1999, from Hubble

Glacial

Ice, dust, two kilometer tall cliffs - north polar region of Mars, from Mars Express

Disruption

Tidal forces will destroy this galaxy as it falls towards the center of the Fornax cluster - NGC 1427A, from Hubble

Cold Beach

Dunes meet the polar cap - Mars, from Mars Global Surveyor

Eclipsed

The Moon's shadow upon the Earth - solar eclipse, by Don Pettit from the ISS (2002)