atoms craters exhibit hydrogen near permanently poles shadowed signature
caps has ice mars
evidence fluvial has mars processes
caps evidence fluvial has ice processes
early earth global had have magma may moon ocean
been body computers earth has mars-sized modelled successfully using
asteroidal been has impacts shaped volcanism
been earth has moon shaped volcanism
asteroidal been earth has impacts moon shaped
between body collision created debris earth following formation mars-sized titanic
1/2 1/4 diameter is
1/4 diameter is natural satellite sole
1/4 diameter earth is moon
1/2 diameter is natural satellite sole
1/2 diameter earth is moon
earth is moon natural satellite sole
caps earth has ice oceans
are craters cryogenic near permanently poles shadowed temperatures
earth geologically inactive is moon today
asteroids comets derived impact is presumed primitive water
frozen must water
carried lunar neutron orbital prospector spectrometer was
asteroidal impacts provide record unique
craters crust desiccated except highly near permanently poles shadowed
crust desiccated earth has highly moon
accretion crust desiccated high highly implies materials temperature
4.5 ago billion collision created debris following formation place titanic took years
accretion collision consistent created debris following formation high is materials temperature titanic
condensed craters have may near organics permanently poles shadowed vapor water
atoms been has hydrogen measured neutron orbital signature spectrometer
been has measured neutron orbital spectrometer
asteroids comets impact organics primitive released vapor water
contrasts earth mars
contrasts crust desiccated highly mars
contrasts crust desiccated earth highly
atoms cryogenic hydrogen imply signature temperatures
cryogenic imply temperatures water
atoms hydrogen imply signature water