Imaginea Astronomica a Zilei

Descopera cosmosul! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

March 15, 1999
See Explanation.  Clicking on the picture will download 
 the highest resolution version available.

Happy Face Crater on Mars
Credit: Malin Space Science Systems, MGS, NASA

Explicatie: (Edit) Even Mars can put on a happy face. The Martian crater Galle has internal markings reminiscent of a smiley face symbol. Such markings were originally discovered in the late 1970s in pictures taken by the Viking Orbiter. A large meteor impacted the Martian surface to form the crater. Conventional wisdom holds that the markings inside the crater are placed by chance by natural processes. The Mars Global Surveyor (MGS) spacecraft currently orbiting Mars took the above picture. MGS recently started the global surveying phase of its mission.

Imaginea de maine: S Marks the Sun

< Arhiva | Index | Cauta | Calendar | Glosar | Educatie | Despre APOD >

Autori & editori: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
Reprezentanti tehnici NASA: Jay Norris. Specific rights apply.
Un serviciu al: LHEA at NASA/ GSFC
& Michigan Tech. U.