The incredible photo was taken on the 529th day of Curiosity’s mission from a distance of about 99 million miles (160 million km).
For comparison, the Sun is about 93 million (149.6 million km) from Earth.
Then in 2015, Curiosity took a sequence of photographs tracking the Sun as it dipped below the Martian horizon.
Taken on April 15, 2015, the Sun cast an eerie blue glow through a haze of dust in the atmosphere.
The blue glow was caused by blue light penetrating the fine haze more efficiently than other wavelengths of light.