blue sunset on Mars is a real phenomenon caused by the way Martian dust scatters sunlight.
Unlike Earth, where sunsets are red and orange due to the scattering of shorter blue wavelengths by our atmosphere, Mars has an extremely fine dust that scatters blue light more efficiently near the Sun.
So during sunset on Mars, the sky turns reddish-brown while the area around the Sun glows a soft blue. It’s the opposite of what we experience on Earth.
NASA’s rovers have captured this eerie sight













