Why do some stars appear red?

Answer 1

generally speaking things appears the colors that they do because of two things, the way our eyes and brain perceive them and the way the object absorbs and reflects different wavelengths of the light spectrum. our minds interpret the light spectrum as the colors red, orange, yellow, green, blue indigo and violet and any combination of these colors. when light strikes an object, the object absorbs and reflects light waves, for instance if an object appears red to you, it's because the surface of the object absorbs all the other light wavelengths except red, which bounces back to our eye and causes the object to appear red. strangely enough, when all colors of the light spectrum are bounced back to us, we perceive the object to be white and when none of the colors are reflected, we perceive the object to be black!

Answer 2

"red" is the word we use to describe one portion of the spectrum of light which our eyes pick up. Basically, light has a lot of parts - called wavelengths - and every object reflects some light, and absorbs the rest. The bits that get reflected bounce off the object and into our eyes, so we see the reflected bits of light and call them colors. Stuff that we call "red" is stuff which absorbed everything but the "red" bits of the light.

Answer 3

This is because white light is made up of all 7 colours of the rainbow. When the white light hits the red shirt, all colours except for red are absorbed so the red bounces back and reflects into our vision.

Answer 4

Some stars appear red because they are cooler in temperature, emitting more red and orange light. This is known as a red giant star. The cooler temperature causes the star's light to shift towards the red end of the spectrum.

Answer 5

red stars are "red giants", or stars about to supernova. stars supernova when they get really old.

Answer 6

The object reflects red light.