Planetary Science

ESA and NASA's Solar Heliospheric Observatory (SOHO) captured this image of a coronal mass ejection bursting off the leftside of the image at 9:25 p.m. EDT on March 12, 2013. This sun itself is obscured in this image, called a coronagraph, in order to better see the dimmer structures around it. Credit: ESA&NASA/SOHO

Sols 3234-3240, Feb. 27, 2013-Mar. 05, 2013: Opportunity is exploring different locations around the inboard edge of 'Cape York' on the rim of Endeavour Crater.

Moffett Field, California - The Lunar Orbiter Image Recovery Project (LOIRP) is seeking support from the public as it continues its efforts to recover and enhance Moon images from the 1960s using modern technology.

The latest trajectory of comet 2013 A1 (Siding Spring) generated by the Near-Earth Object Program Office at NASA's Jet Propulsion Laboratory in Pasadena, Calif., indicates the comet will pass within 186,000 miles (300,000 kilometers) of Mars and there is a strong possibility that it might pass much closer.

The famed wispy terrain on Saturn's moon Dione is front and center in this recent Cassini spacecraft image. The ''wisps'' are fresh fractures on the trailing hemisphere of the moon's icy surface.

See Dione's Icy Wisps to learn more about Dione's wispy terrain.

This view is centered on 55 degrees north latitude and 85 degrees west longitude on Dione (698 miles, or 1,123 kilometers across). North is up and rotated 39 degrees to the left.

The location of the ~ 1000 km Marte Vallis channel system on Mars. Marte Vallis is filled with young lavas obscuring the source and morphology of the channels. The dashed box highlights the area shown in Fig. 2. The background shows the global topography of Mars (MOLA colorized elevation above a MOLA hillshade image).