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

A second successful medium-altitude operation for Hayabusa2

For the second time, JAXA navigators have zoomed their cameras and other instruments in on asteroid Ryugu. The August 1 operation was quicker than the previous one, requiring only 26 hours for the descent, science, and ascent.

Curiosity's organics on Mars

What does it mean that the Mars rover Curiosity found organics in Martian rocks? Emily Lakdawalla translates the science.

Programming note

Emily Lakdawalla is on vacation from 1 to 22 July. Jason Davis will reign over the blog in her absence.

Hayabusa2: Ryugu takes shape

Hayabusa2 is now less than 1000 kilometers away from Ryugu, and the tiny asteroid is beginning to betray its shape.

Hayabusa2's Approach phase has begun with a new photo of Ryugu!

On June 3, Hayabusa2 ended use of its ion engines, for now, and is coasting the remaining distance toward Ryugu. It's using an optical navigation camera to image the asteroid's position against a field of background stars to help it navigate.

How long is a day on Saturn?

One of the Cassini mission's goals was to figure out how long a day on Saturn is. We still don't know. A new paper reports a measurement of the rotation period of Saturn that is different from past measurements.

How to keep up with Hayabusa2

Hayabusa2 is approaching asteroid Ryugu! Here's how to stay on top of mission news and the mission's planned schedule for 2018.

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