“X” marks the spot of some intriguing surface activity in the latest picture of Pluto returned from NASA’s New Horizons spacecraft. Transmitted to Earth on Dec. 24, this image from the Long Range ...

A recently released high-resolution swath of Pluto taken by NASA's New Horizons spacecraft shows all kinds of wonderful things in Sputnik Planum, the informal name given to the icy plains dominating ...

The nitrogen ice glaciers on Pluto appear to carry an intriguing cargo: numerous, isolated hills that may be fragments of water ice from Pluto’s surrounding uplands. These hills individually measure ...

In a series of remarkable new photos sent to us by NASA's New Horizons spacecraft during it close flyby of Pluto in July, puzzling new features are revealed in rich detail. Take a few minutes to click ...

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New close-up images of Pluto from NASA’s New Horizons spacecraft reveal a bewildering variety of surface features that have scientists reeling because of their range and complexity. Image: This ...

Well that didn’t take long. No sooner did NASA’s New Horizons spacecraft reach the edge of the solar system then it delivered the alien virus of US-style political correctness to Pluto. [A] vast, ...

Since New Horizon’s flyby last July, Pluto has been a trove of unique geology and bizarre phenomena. Astronomers have tried to understand the most puzzling ones, and they might already have an ...

Since New Horizons flew past Pluto in July 2015, we’ve been treated to countless images and theories about what has proved to be a fascinating world, from evidence for iceberg-like features to ...

Pluto isn't just a distant ice ball; it's turning out to be a fascinating example of planetary geology. Share on Facebook (opens in a new window) Share on X (opens in a new window) Share on Reddit ...