Don't know your quarks from your neutrinos from your Higgs boson particle? Fear not - here is a very useful site for anyone interested in a user-friendly guide to quantum mechanics.
These spectacular natural phenomena are known as lenticular clouds. Small wonder that they are responsible for a lot of UFO sightings.
Another beauty from Hubble - this time of Saturn and four of its' moons - two of them casting shodows on the surface.
For thousand of years we thought the Earth was the centre of everything. Then science came along and told us a different story.
In cosmic terms the human being is probably no bigger than a quark. Yet his brain (the size of a cantaloup melon and wrinkled like a walnut) is the most complex object in the known Universe. As Stephan Hawking said, 'We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe and that make us something special.'
There's scale and there's scale - and even our wondrous grey matter is mind-boggled trying to wrap itself round this!
Our Sun may look like this one day? The Helix Nebula is one of the brightest and closest examples of a planetary nebula, a gas cload created at the end of the life of a Sun-like star.
Comet Lulin - a brand new discovery - is now visible to the naked eye, although a pair of binoculars might come in handy!