Berlin, September 23 : Data from NASA’s Messenger spacecraft’s first flyby of Mercury has suggested that the spider-like Pantheon Fossae formation, a radiating web of troughs located in the giant Caloris Basin, is directly linked to an impact crater at the centre of the web.
The Caloris Basin is the youngest-known large impact basin on Mercury.
The basin was discovered in 1974 during Mariner 10’s flyby, but the centre of the basin had not been seen until Messenger’s first flyby on 14th January.
Messenger revealed that the crater’s interior appeared to have been flooded by volcanic material in a similar way to the lunar mare basins.
A ring of troughs was observed around the circumference of the basin.