NASA Jet Propulsion Lab has released a photo of what appears a large perfect sphere on the surface of Mars.
NASA’s Astronomy Picture Of The Day: Plato And The Lunar Alps
Plato and the Lunar Alps Image Credit & Copyright: Richard Bosman Explanation: The dark-floored, 95 kilometer wide crater Plato and sunlit peaks of the lunar Alps (Montes Alpes) are highlighted in this sharp digital snapshot of the Moon's surface.
“ Flowing Barchan Sand Dunes on Mars Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA ” Explanation: When does Mars act like a liquid? Although liquids freeze and evaporate quickly into the thin.