Why watch the sunset on Mars, the sun is blue? 99% of people do not know

What color is the sun? Red, yellow, white? When children draw, they like to paint the sun in different colors, but if they paint it in blue or something like that, they will definitely be laughed at, how can the sun be blue? But in fact, when you look at the sunset on Mars, the sun is blue, why is it blue when you look at the sun on Mars?

People have always been more concerned about Mars, because in the large universe, this planet is very close to us, and the existence of water and atmosphere on Mars, a variety of terrain and the Earth is close, the most valuable is the size of this planet and the Earth is about the same, in theory, is a very promising planet to move to, so many countries have launched the exploration of Mars, according to a variety of Mars probe to send back the According to the photos sent back by various Mars detectors, people found that when watching the sunset on Mars, the sun is actually blue.

The Mars atmosphere is thin, 96% of the air is carbon dioxide, and the Earth is different, the Mars atmosphere mainly absorbs the red spectrum of the sunlight, so through the atmosphere to see the sun, the color presented to the cooler shades of blue close, naturally blue, while the Earth's atmosphere absorbs the cooler shades, that is, the blue spectrum, so the Earth to see the sun looks red.

The situation on Mars is actually similar to the dust storm weather, the permanent presence of dust in the atmosphere will be these warm tones of red light scattered away, so we look at Mars will feel that this is a red planet, and that blue light is absorbed by the dust in the atmosphere, so we see the sun near the horizon, those are absorbing blue light rich dust layer will be particularly conspicuous, so the sun will become blue it.

In fact, on Earth, we can also see a blue sun, for example, during a sandstorm, the large particles of material in the air undergo Mie scattering, and these large particles of dust scatter the longer wavelengths of red light, so that the sun looks blue around it, while other places are a little redder.

Many beauties on Mars cannot be appreciated on Earth, such as Mount Olympus, a sky that is not blue, icebergs in craters, and a distant Earth, etc. Human exploration of Mars will never stop, and recently a new underground lake under the ice cap was discovered.