“Trail” 4 back to upload a photo of Mars, only to see a barren Martian surface, the sky above a rainbow across the skyline, the photo immediately went viral on the Internet, many people have exclaimed “Mars also has a rainbow?” NASA then responded, “No, no rainbows can not appear here.”
NASA explained that the rainbow in the photo is the sunlight to the water droplets in mid-air, light refraction and reflection of light produced. However, the temperature of Mars is too low, there is not enough water condensation reflection, this arc is only the lens glare.
In this regard, the “Trail” also responded in Twitter, this photo is the rear “Hazcams” (Hazcams) taken by the front lens shading equipment, but the rear of the camera did not shade the light, resulting in easy reflection of light between the lens and the lens, only to The situation of lens glare.
However, some users found a 2015 “AmA” (Ask me anything) with NASA members, when the NASA Mars Program Office Chief Scientist Rich Zurek said that although there are no water droplets on Mars, but there is snow observed at the poles, so there is Icebows” (Icebows) may appear.
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