They did it by using more than 100,000 pictures taken from NASA's messenger spacecraft.
The topography reveals mercury's highest and lowest points. Areas with higher elevations are colored brown, yellow and red and those with lower elevations appear blue and purple.
Click here to read more about NASA's report.
Today we’re talking about #MercuryTransit. Here's a new topographic view of Mercury: https://t.co/NZlMTQfjVg pic.twitter.com/N9CkqEx2pC
— NASA (@NASA) May 9, 2016