Checking in with NASA's Cassini spacecraft, our current emissary to Saturn, some 1.5 billion kilometers (932 million miles) distant from Earth, we find it recently gathering images of the Saturnian system at equinox.

5

3

OK, duh, that's Saturn. But you can see four moons crossing its face at the same time! Such an event is pretty rare, and very cool. The moons are (from left to right) Enceladus, Dione, Titan, and Mimas.

10

5

Jupiter has a rocky core that is more than twice as large as previously thought, according to computer calculations by UC Berkeley and University of Arizona scientists.

4

2

As Cassini receded from its August 11, 2008 flyby of Enceladus, it captured an 8-frame mosaic of the terrain of the southern hemisphere through five different camera filters. Those data have been combined to create this huge mosaic.

9

4

The Visual Monitoring Camera (VMC) is mounted on Mars Express, ESA's deep-space probe now orbiting the Red Planet. It originally provided simple, low-tech images of Beagle lander separation, and is now back in action as the 'Mars Webcam'.

4

2

Two robots the size of golf carts were given 90 days to squeeze as much science as possible from the barren, dust-swept terrain of Mars. After that, scientists expected nothing more from them than death.

7

1

NASA scientists unveiled unprecedented close-up images of a massive crater on Mars they said today could open the book on the Red Planet, from its formation to its history with water, the basis of life on Earth.

6

0

Flight Through Mariner Valley takes viewers on a journey through this vast canyon system on an imaginary scout ship that dives low over landslides and races through winding canyons.

3

0

It was billed as an official NASA Headquarters briefing to space scientists—but turned into a powder-keg of emotion.

4

3

Tomorrow, the Mars Reconnaissance Orbiter (MRO) will reach Mars.

2

0

A special study group has advised NASA that Venus is far too hellish of a world for life to exist on or below the planet's surface. Furthermore, while the potential for life in the clouds of Venus can't be ruled out, the expert panel gauged this possibility as extremely low.

1

0

NASA's Spirit Mars rover has arrived at a site dubbed "Home Plate" within Gusev crater. But what the robot found has left scientists puzzled.

2

0