Ray of Light and Snowflake were the mascots of the Sochi 2014 Paralympic Winter Games. They are space travellers who came to Earth from two different planets. Ray of Light came from a planet that was ...

M16 (Eagle Nebula)| Chandra detects X-rays from young stars in the region, including one embedded in a pillar. A supernova ...

The image is blurred. Long sight is due to the eyeball being too short, or the lens cannot be made thick enough by the ciliary muscles to focus the light rays on the retina. Long sight often ...

images can be formed by specular reflections. Figure caption, Specular reflection from a mirror causes all parallel light rays to be reflected in all directions. If light meets a rough surface ...

If you go to the Chandra website, you can swap between the four wavelengths of light comprising the composite image. The X-ray (blue and white) data came from Chandra and took five days ...