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Our journalists and guest bloggers bring you stunning imagery and the space stories that matter most.

Four Ideas to Bust the Floor on Outer Planet Mission Costs

Van Kane • March 26, 2015 • 7

The road to lower costs outer planet missions has been paved by NASA’s first two New Frontiers missions, the $700M New Horizons mission to Pluto and the $1.1B Juno mission to Jupiter. But can the cost of a mission to the outer solar system be cut to $450M, the limit for a Discovery mission?

LPSC 2015: Aeolian Processes on Mars and Titan

Nathan Bridges • March 26, 2015

Planetary scientist Nathan Bridges reports on results from the Lunar and Planetary Science Conference about the action of wind on the surfaces of Mars and Titan.

At last, Ceres is a geological world

Emily Lakdawalla • February 25, 2015 • 25

I've been resisting all urges to speculate on what kinds of geological features are present on Ceres, until now. Finally, Dawn has gotten close enough that the pictures it has returned show geology: bright spots, flat-floored craters, and enigmatic grooves.

Cassini begins a year of icy moon encounters with a flyby of Rhea

Emily Lakdawalla • February 12, 2015 • 5

At last! Cassini is orbiting in Saturn's ring plane again. I do enjoy the dramatic photographs of Saturn's open ring system that Cassini can get from an inclined orbit, and we won't be getting those again for another year. But with an orbit close to the ring plane, Cassini can repeatedly encounter Saturn's icy moons, and icy moon flybys are my favorite thing about the Cassini mission.

Ceres Coming Into View

Paul Schenk • February 03, 2015 • 1

Dawn is on approach to Ceres, the largest of the asteroids, and is starting to resolve features.

Fountains of Water Vapor and Ice

Deepak Dhingra • January 22, 2015 • 2

Deepak Dhingra shares some of the latest research on Enceladus' geysers presented at the American Geophysical Union (AGU) Fall Meeting in San Francisco last month.

45th Binghamton Geomorphology Symposium Report

Ted Stryk • September 23, 2014 • 1

The 45th Binghamton Geomorphology Symposium, usually focused on terrestrial studies, shifted this year to planetary science. Ted Stryk gives us an overview.

Cassini's awesomeness fully funded through mission's dramatic end in 2017

Emily Lakdawalla • September 03, 2014 • 9

Last year, rumors swirled that NASA may be so pinched for dollars that the agency might end the Cassini mission early. Today, Cassini received the welcome news that it has formally been funded through the planned end of its extended-extended mission in 2017. A huge congratulations to the Cassini mission!

On the masses and motions of mini-moons: Pandora's not a "shepherd," but Prometheus still is

Emily Lakdawalla • July 04, 2014 • 4

As Cassini celebrates 10 years at Saturn, we're beginning to see its long-term observations of Saturnian moons bear fruit. A surprising new result: While Prometheus exerts control over the F ring and Atlas, Pandora -- long thought to be a shepherd of the F ring -- does not.

A close look at Saturn's closest moons

Emily Lakdawalla • June 26, 2014 • 1

A new composite image of the eight named moons that orbit closest to Saturn, and a list of all the best Cassini observations of these moons.

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