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Stories, updates, insights, and original analysis from The Planetary Society.

Not a Heart of Ice

Mark Marley explains what planetary scientists mean when they say the word

The Realm of the Ice Giants

Imagine 2 icy worlds far from the Sun. Their serene, blue atmospheres. Huge, ominous-looking storms. Tantalizing glimpses of moons with exotic, icy terrains. Delicate sets of encircling rings.

How we would explore Uranus or Neptune

One fact dominates the planning for any mission to Uranus or Neptune: They lie far from the sun. A newly released NASA report looks at how we can explore these icy giants.

Approaching Neptune

Image processing enthusiast Ian Regan is working on a cool new version of the Voyager 2 Neptune approach movie.

Flawed Beauties

More examples of imperfect--but tantalizing--images from deep space.

Neptune: The new amateur boundary?

Can features on Neptune be observed by amateur astronomers? For years, the Hubble Space Telescope and some professional terrestrial observatories have been revealing incomplete belts and spots on the surface of Neptune. Now, spots have been imaged by amateurs.

Gravity assist

With the recent announcement by NASA that the 36 year-old spacecraft Voyager 1 has officially entered interstellar space at a distance from the sun about four times further than Neptune's orbit, and with Voyager 2 not far behind, it seems worthwhile to explore how humans managed to fling objects so far into space.

Lesser-known views of Uranus and Neptune

Despite the fact that Voyager 2 returned relatively few high-resolution images from either Uranus or Neptune, there are many more photos in the archives than regularly make it to public view.

Planetary Society Weekly Hangout: The Ice Giants, with Heidi Hammel

My guest this was Planetary Society Board vice president Heidi Hammel. We discussed two planets near and dear to our hearts, Neptune and Uranus. What's new on these icy worlds since Voyager 2 passed by, and what are the prospects for their future exploration?

Pretty picture: Neptune and Triton

On a lonely evening, what is one to do but to dip into archival space image data and surface with a gorgeous photo of a crescent Neptune and Triton?

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