located_on_astronomical_body spurr 
___MASK49___ , otherwise known as the world , is the third planet from the Sun and the only object in the Universe known to harbor life . It is the densest planet in the Solar System and the largest of the four terrestrial planets . Geothermal energy is heat energy generated and stored in the ___MASK49___ . Thermal energy is the energy that determines the temperature of matter . The geothermal energy of the ___MASK49___ ' s crust originates from the original formation of the planet and from radioactive decay of materials ( in currently uncertain but possibly roughly equal proportions ). The geothermal gradient , which is the difference in temperature between the core of the planet and its surface , drives a continuous conduction of thermal energy in the form of heat from the core to the surface . The adjective " geothermal " originates from the Greek roots "  ( ge )", meaning ___MASK49___ , and "  ( thermos )", meaning hot . Meteor Crater is a meteorite impact crater approximately east of Flagstaff and west of Winslow in the northern Arizona desert of the United States . Because the United States Board on Geographic Names commonly recognizes names of natural features derived from the nearest post office , the feature acquired the name of " Meteor Crater " from the nearby post office named Meteor . The site was formerly known as the Canyon Diablo Crater and fragments of the meteorite are officially called the Canyon Diablo Meteorite . Scientists refer to the crater as Barringer Crater in honor of Daniel Barringer , who was first to suggest that it was produced by meteorite impact . The crater is privately owned by the Barringer family through their Barringer Crater Company , which proclaims it to be the " best preserved meteorite crater on ___MASK49___ ". A volcano is a rupture in the crust of a planetary - mass object , such as ___MASK49___ , that allows hot lava , volcanic ash , and gases to escape from a magma chamber below the surface . Montes Archimedes is a mountain range on the ___MASK79___ . It is named after the crater Archimedes that lies to the north , which in turn is an eponym of the Greek mathematician Archimedes . Lava is the molten rock expelled by a volcano during an eruption . The resulting rock after solidification and cooling is also called " lava ". The molten rock is formed in the interior of some planets , including ___MASK49___ , and some of their satellites . The source of the heat that melts the rock within the ___MASK49___ is geothermal energy . When first erupted from a volcanic vent , lava is a liquid usually at temperatures from . Palus Putredinus ( latin for " Marsh of Decay ") is an area of the lunar surface that stretches from the crater Archimedes southeast toward the rugged Montes Apenninus range located on the southeastern edge of Mare Imbrium . This region is a nearly level , lava - flooded plain bounded by the crater Autolycus to the north and the foothills of the Montes Archimedes to the west . The selenographic coordinates are 26 . 5 ° N , 0 . 4 ° E , and it lies within a diameter of 161 km . The Solar System is the gravitationally bound system comprising the Sun and the objects that orbit it , either directly or indirectly . Of those objects that orbit the Sun directly , the largest eight are the planets , with the remainder being significantly smaller objects , such as dwarf planets and small Solar System bodies . Of the objects that orbit the Sun indirectly , the moons , two are larger than the smallest planet , ___MASK43___ . An impact crater is an approximately circular depression in the surface of a planet , ___MASK79___ , or other solid body in the Solar System or elsewhere , formed by the hypervelocity impact of a smaller body . In contrast to volcanic craters , which result from explosion or internal collapse , impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain . Although Meteor Crater is perhaps the best - known example of a small impact crater on Earth , impact craters range from small , simple , bowl - shaped depressions to large , complex , multi - ringed impact basins . A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a ( nearly ) constant volume independent of pressure . As such , it is one of the four fundamental states of matter ( the others being solid , gas , and plasma ), and is the only state with a definite volume but no fixed shape . A liquid is made up of tiny vibrating particles of matter , such as atoms , held together by intermolecular bonds . Water is , by far , the most common liquid on ___MASK49___ . Like a gas , a liquid is able to flow and take the shape of a container . Most liquids resist compression , although others can be compressed . Unlike a gas , a liquid does not disperse to fill every space of a container , and maintains a fairly constant density . A distinctive property of the liquid state is surface tension , leading to wetting phenomena . Mare Imbrium ( Latin for " Sea of Showers " or " Sea of Rains ") is a vast lava plain within the Imbrium Basin on the ___MASK79___ and is one of the larger craters in the Solar System . The Imbrium Basin formed from the collision of a proto - planet during the Late Heavy Bombardment . Basaltic lava later flooded the giant crater to form the flat volcanic plain seen today . The basin ' s age has been estimated using U - Pb dating methods to 3938 ± 4 million years ago , the diameter of the impactor has been estimated to be 250 ± 25 km . The ___MASK79___ ' s maria ( plural of mare ) have fewer features than other areas of the ___MASK79___ because molten lava pooled in the craters and formed a relatively smooth surface . Mare Imbrium is not as flat as it was originally because later events have altered its surface . Spurr is the lava - flooded remains of a lunar impact crater . It is located in the midst of the Palus Putredinis plain , to the southeast of the crater Archimedes . Only the southern half of the rim protrudes significantly through the lunar mare material , while the northern section of the wall has a resemblance to a ghost crater rim . The formation was known as Archimedes K before being renamed by the IAU . A planet is an astronomical body orbiting a star or stellar remnant that The term " planet " is ancient , with ties to history , astrology , science , mythology , and religion . Several planets in the Solar System can be seen with the naked eye . These were regarded by many early cultures as divine , or as emissaries of deities . As scientific knowledge advanced , human perception of the planets changed , incorporating a number of disparate objects . In 2006 , the International Astronomical Union ( IAU ) officially adopted a resolution defining planets within the Solar System . This definition is controversial because it excludes many objects of planetary mass based on where or what they orbit . Although eight of the planetary bodies discovered before 1950 remain " planets " under the modern definition , some celestial bodies , such as ___MASK95___ , Pallas , Juno and Vesta ( each an object in the solar asteroid belt ), and ___MASK56___ ( the first trans - Neptunian object discovered ), that were once considered planets by the scientific community , are no longer viewed as such .