Photos from the James Webb Space Telescope have revealed more than 40 stars within the gravitationally lensed "Dragon Arc" galaxy, 6.5 billion light-years from Earth. It is the largest group of ...

She added: "They're enormous red discs that pop up in these images ... Webb's infrared instruments are capable of seeing objects so distant, the light from them takes up to 13.5 billion years ...

There are three primary colours: red, green and blue. They can be combined in different ways to make every other colour. The colour of an object is determined by the wavelength of light that it ...

All objects in the night sky are not only seen ... Distant galaxies appear red because their light is stretched (red light has longer wavelengths) by the expanding universe stretching it.

It all boils down to a phenomenon called fluorescence, which is the brightness we see emitted by certain objects ... for visible light. Within the colours of visible light, red is the longest ...