Antoniadi (Martian crater)
Encyclopedia
Antoniadi is a crater on Syrtis Major Planum, Mars
, located at 21.5° north latitude and 299.2° west longitude. It is 394 km long and was named after Eugène Michael Antoniadi, a Turkish-born French astronomer (1870-1944).
There is evidence that Antoniadi Crater once contained rivers and lakes. The picture below shows an inverted channel in Antoniadi, as seen by HiRISE. Inverted channels formed from accumulated sediments that were cemented by minerals. These channels eroded into the surface, then the whole area was covered over with sediments. When the sediments were later eroded away, the place where the river channel existed remained because the hardened material were resistant to erosion.
Mars
Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance...
, located at 21.5° north latitude and 299.2° west longitude. It is 394 km long and was named after Eugène Michael Antoniadi, a Turkish-born French astronomer (1870-1944).
There is evidence that Antoniadi Crater once contained rivers and lakes. The picture below shows an inverted channel in Antoniadi, as seen by HiRISE. Inverted channels formed from accumulated sediments that were cemented by minerals. These channels eroded into the surface, then the whole area was covered over with sediments. When the sediments were later eroded away, the place where the river channel existed remained because the hardened material were resistant to erosion.