20 amazing facts about space and astronomy
What do lemons and raspberries have to do with space, just how dense is a neutron star and how powerful is a gamma-ray burst?
Space is vast, and filled with weird and wonderful things. Some of the bizarre inhabitants and phenomena of our Universe are more astounding than even the most extreme sci-fi or space movie.
This selection of some of the most mind-boggling facts about our cosmos takes a bite-sized look at our intriguing planet, Moon, Solar System, Galaxy and Universe.
And if you'd like more space oddities, read our guides to the weirdest stars, 9 mind-blowing facts about the Universe, or the biggest cosmic objects.
The Moon is lemon-shaped
Despite its appearance in the night sky, our natural satellite is nowhere near round. In fact, the Moon is shaped like a lemon, with flattened poles and bulges on both the near and far side around its equator.
This strange shape is thought to have been created during interactions with Earth soon after its formation.