This stunning image features a deep field view of the Cassiopeia constellation where the two small planetary nebulas can be ...

It was around 1870 when the British physicist John William Strutt, better known as Lord Rayleigh, first found an explanation for why the sky is blue: Blue light from the Sun is scattered the most when ...

This recurrent nova, located approximately 3,000 light ... in the sky, shining with an orange hue in the Boötes constellation above the east. Next, locate Vega, a brilliant blue-white star ...

Sometimes the light runs right into one of them. In short, the sky looks blue because the blue portion of sunlight is much more likely to bounce off the molecules in the atmosphere than the ...