Mars 'rainbow' actually lens flare, NASA says

在星期二 鸣叫, 的 NASA Perseverance Mars rover account wrote that the agency had seen comments online wondering about the bright arc captured in the April 4 photo from the rover’s onboard Rear Left Hazard Avoidance Camera.

NASA GETS FIRST WEATHER REPORT FROM MARS ROVER LANDING SITE

Many have asked: Is that a rainbow on Mars?” 他们说. “没有. Rainbows aren’t possible here.

Rainbows are created by light reflected off of round water droplets, but there isn’t enough water here to condense, and it’s too cold for liquid water in the atmosphere,” 他们继续. “This arc is a lens flare.

A lens flare is caused by a non-image-forming bright light that shines into the lens.

Rainbows form when sunlight passes through raindrops in the atmosphere.

然而, while a rainbow may not be possible on Marsthin, dry and extremely cold atmosphere, The Hill noted Tuesday that in a 2015 Ask Me Anything a NASA team member hinted at the prospect oficebows” 因为 snow has been observed at the red planet’s poles.

Mars Perseverance Sol 43: Rear Left Hazard Avoidance Camera (Hazcam) NASA's Mars Perseverance rover acquired this image of the area in back of it using its onboard Rear Left Hazard Avoidance Camera. This image was acquired on Apr. 4, 2021 (Sol 43) at the local mean solar time of 15:17:19. Image Credit: NASA/JPL-Caltech

Mars Perseverance Sol 43: Rear Left Hazard Avoidance Camera (Hazcam) NASA’s Mars Perseverance rover acquired this image of the area in back of it using its onboard Rear Left Hazard Avoidance Camera. This image was acquired on Apr. 4, 2021 (Sol 43) at the local mean solar time of 15:17:19. Image Credit: NASA/JPL-Caltech

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