Planets

Note that the “ice” of the outer Solar System is really a mix of water ice and ammonia cleaning fluid which softens the ice quite a bit…Continue readingJupiter

Despite its small size, about half the size of Earth, Mars has some incredibly large geological features. These include the highest mountain…Continue readingMars

Although Mercury is a close neighbour, we know very little about it. Sky & Telescope is now regularly announcing the imaging of planets…Continue readingMercury Geology 

The light rock is called anorthosite, principally made of a low density mineral called feldspar. Because the outer part of the Moon, called…Continue readingMoon

Remember Pluto? I mean the Pluto before all the controversy about its status within the solar system. It was comfortably nestled within…Continue readingA Pluto by Any Other Name

An experienced observer may tell you that when it is first rising is not the ideal time to view a planet; ideally you should wait until…Continue readingSaturn

Earth and Venus are about the same size and weight. Therefore planetary geologists assume they are probably very similar …Continue readingComparison of Earth and Venus