what has been discovered on mars so far?
Acidalia Colles Aganippe Fossa Acheron Fossae Alba Patera Adirondack Aeolis Mensae Airy-0 Airy Aeolis quadrangle Acidalia Planitia
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 On November 26 , 2011 , NASA 's Mars Science Laboratory mission was successfully launched for Mars . Curiosity successfully landed on Mars on August 6 , 2012 , and subsequently began its search for evidence of past or present life on Mars . 

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 There are ongoing investigations assessing the past habitability potential of Mars , as well as the possibility of extant life . In situ investigations have been performed by the Viking landers , Spirit and Opportunity rovers , Phoenix lander , and Curiosity rover . Future astrobiology missions are planned , including the Mars 2020 and ExoMars rovers . 

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 On March 18 , 2015 , NASA reported the detection of an aurora that is not fully understood and an unexplained dust cloud in the atmosphere of Mars . 

contradiction
 That same year , however , a team from the USNO confirmed the existence of the planet with a much higher probability . 

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 In late December 2014 , NASA 's MAVEN spacecraft detected evidence of widespread auroras in Mars 's northern hemisphere and descended to approximately 20 – 30 degrees North latitude of Mars 's equator . The particles causing the aurora penetrated into the Martian atmosphere , creating auroras below 100 km above the surface , Earth 's auroras range from 100 km to 500 km above the surface . Magnetic fields in the solar wind drape over Mars , into the atmosphere , and the charged particles follow the solar wind magnetic field lines into the atmosphere , causing auroras to occur outside the magnetic umbrellas . 
