The Sun is what colour, exactly? The former astronaut at NASA says it's not yellow.

In a recent interview, a former NASA astronaut verified that the Sun is white, not yellow.

In response to a tweet from an account called "Latest in Space," astronaut Scott Kelly confirmed the information.

The dwarf star is white, but it appears yellow because of Earth's atmosphere. That's why the Sun seems white from above Earth's atmosphere: it's so far away that it's not even visible.

As reported by NASA, blue light is less likely to be scattered by Earth's atmosphere than red.

Since there isn't as much blue light as in the sky, the Sun seems yellow to the human eye.

Additionally, NASA assures us that we are shielded from x-ray and gamma-ray radiation.

More and more of the longest-wavelength red light, which occurs when sunlight travels through the outermost layers of the atmosphere, reaches our eyes. This is also why the Sun and sky look redder just before sunset.

Multiple comments were placed on the astronaut's post by curious netizens. Others were on board with this, while others were still sceptical, and some even commented sarcastically.

The man may be lying for the sake of lying. Please, does anyone else confirm this?" A doubtful user expressed curiosity.

Another user asked, "What about Earth, is it flat or globe?" to mock the flat-earthers. Because some people still hold to the idea that the Earth is flat!

One person even chimed in with an argument that human eyes have evolved to perceive green as yellow.

When asked about the green Sun, another member whose profile said he was a scientist stated, "It peaks in green, yeah." To be sure, the colours on either side contribute roughly the same amount to the white overall. Even if we could see more of the E-M spectrum, this would still be the case (roughly) so long as our visual sensitivity also peaked in the green region.