artist's concept of a distant red planet orbiting its sun. this alien world shows definite signs of water, and therefore maybe life itself. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標火星
a scene on mercury, featuring one of the many enormous scarps that scar its surface. a comet can be seen passing by in the sky. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
a view from the surface of a large kuiper belt object. many of these objects have moons of their own. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
venus' maxwell montes are among the highest, most precipitous mountain ranges in the solar system. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
nasa's mars reconnaissance orbiter has a ringside seat as the 2014 comet passes very close to mars. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
though jovian planets may be composed of gases and ices, the dozens of moons around them may be all the solid ground necessary to spawn intelligent beings. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
a lone astronaut looks up at the sun while exploring mars. a rover trails behind. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標火星
artist's concept of a view across a pool of lava on the surface of io, towards jupiter. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
saturn seen from the surface of its moon, iapetus. iapetus is divided into a bright hemisphere and a dark one. this is a scene on the dividing line. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
zeta piscium is a binary star system consisting of a red giant and a white dwarf. the latter is drawing in material from its companion. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標星星, 紅色, 軌道運行
a robotic rover explores the surface of a rocky and barren alien world. a large cratered moon rises over the airless environment. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標外太空, 地球, 月亮
a scene on a moon of upsilon andromeda b, a recently discovered extrasolar planet. it is a super-jupiter that orbits very close to its star. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
an artist's depiction of a ringed gas giant planet with six moons. the view is from the rocky surface of the farthest moon. a distant star illuminates the scene. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
saturn seen from the surface of its moon, rhea. it is the largest of saturn's airless satellites. it was discovered in 1672 by giovanni cassini.. - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
artist's impression of an eyeball planet with a temperate zone around the termination line - 天體生物學 幅插畫檔、美工圖案、卡通及圖標
