Mercury’s Caloris Basin is about 950 miles (1,525 kilometers) across. For comparison, the state of Texas is 773 miles (1,244 km) wide. The Moon has a similarly sized impact crater, Mare Orientale.

After a 30-year gap, all eyes are back on Mercury as the MESSENGER probe gives us our second glance at the Sun's nearest neighbour. Hints of intriguing results to come are already at hand. On 10 March ...

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Of Interest: This image shows a portion of the eastern edge of Caloris basin, one of the largest impact basins in the Solar System. The floor of the Caloris basin is filled with volcanic plains, while ...

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The Caloris basin was flooded by lava, represented in orange in this mosaic. Understanding the crustal structure of large impact basins and the study of differences in the gravitational field in large ...

On 15 November 2014, NASA's MESSENGER orbiter imaged the Caloris Basin, the largest impact structure on Mercury, using the MDIS camera system in various colour channels (centred at 31.5 degrees north ...

A new model suggests that the origin of the Pantheon Fossae on the planet Mercury, a radiating web of troughs located in the giant Caloris Basin, is directly linked to an impact crater at the centre ...

On the list of places in our Solar System that may have been habitable at one point, this chaotic, burning hot planet probably comes in last. Time to think again. In a counterintuitive new study, ...

This mosaic of Caloris basin is an enhanced-color composite overlain on a monochrome mosaic. The color mosaic is made up of WAC images obtained when both the spacecraft and the Sun were overhead, ...

As NASA’s MESSENGER spacecraft prepares for its second flyby of Mercury, new analyses of data from the first flyby was presented at the European Planetary Science Congress in Münster September 23. Dr.