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Not a Heart of Ice

Mark Marley • April 02, 2019 • 1

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

The Realm of the Ice Giants

The Planetary Report • March 2019

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.

The subtle color difference between Uranus and Neptune

Björn Jónsson • March 11, 2019 • 3

The color of Uranus and Neptune is similar, but not identical. Uranus appears greener and Neptune bluer.

Voyager 40th anniversary: Revisiting the Voyagers' planetary views

Björn Jónsson • August 30, 2017

Björn Jónsson argues that even now, 40 years after Voyager 1 and 2 were launched, a lot of the data they returned is still of high interest.

How we would explore Uranus or Neptune

Van Kane • July 06, 2017 • 2

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.

Revisiting the ice giants: NASA study considers Uranus and Neptune missions

Jason Davis • June 21, 2017 • 6

Only one spacecraft has ever visited Uranus and Neptune: Voyager 2, in the late 1980s. A new NASA report explores the reasons to go back, and what type of mission might take us there.

Some beautiful new (old) views of Neptune and Triton

Emily Lakdawalla • September 20, 2016 • 4

Beautiful new amateur work with 27-year-old Voyager data.

Oppositions, conjunctions, seasons, and ring plane crossings of the giant planets

Emily Lakdawalla • July 07, 2016 • 4

When are the solstices and equinoxes on the giant planets, and when are they best positioned for view from Earth? I ask these questions a lot as I write about Earth photos of giant planets, and I finally decided to gather the answers to those questions in a single post.

Approaching Neptune

Emily Lakdawalla • March 11, 2016 • 2

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

Checking in on Uranus and Neptune, September 2015 edition

Emily Lakdawalla • September 22, 2015 • 5

There are no spacecraft at Uranus or Neptune, and there haven't been for 30 and 25 years, respectively. So we depend on Earth-based astronomers to monitor them, including Damian Peach.

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