... The space community talks hopefully about asteroid mining, about solar power satellites, and about Helium-3 mining on the Moon but, unfortunately, they been unable to convince anyone but the faithful that the technological risks are low enough - and the ...
... The trails of some moving objects, most likely asteroids in the solar system, are seen in the field with intermittent blue, green and red colours. ...
... If, as scientists believe, Phoebe is a captured asteroid with its composition unmodified since its formation in the outer solar system, it is the first such object that has been photographed at close enough range to show shape and surface brightness. ...
... Neptune is one of the class of planets -- all of them beyond the asteroid belt -- known as gas giants; the others in this class are Jupiter , Saturn and Uranus . ...
... Saturn holds a wide assortment of satellites in its orbit, ranging from Phoebe , a small moon that travels in a retrograde orbit and is probably a captured asteroid, to Titan , the planet-sized moon with a thick nitrogen-methane atmosphere. ...
... Although we can directly reach planets, satellites, asteroids and comets of the Solar System with spacecrafts and we can hope to explore them with manned missions, this represents a completely negligible fraction of the Universe (~10-45 in volume). ...
... There are no landforms resembling impact craters, as the volcanism covers the surface with new deposits much more rapidly than the flux of comets and asteroids can create large impact craters. ...