What causes the vivid colours in deep space photography?

What causes the vivid colours in deep space photography?
Sharp new observations have revealed striking features in planet-forming regions around young stars
Check out the final moments of the comet chaser – in pictures
The most reliable meteor shower of the year peaks on the night of 12-13 August. Astronomer Ninian Boyle shows you how to shoot it
Having been with NASA for over 25 years, Bill Ingalls tells us what it’s like to take photos for the world’s biggest space agency.
Our Stargazing LIVE week continues with a look at some of your best images that have featured in All About Space magazine.