Pluto's not the last planet, it's the first Kuiper Belt Object. The Kuiper Belt is made up of millions of icy bits left over from the beginning of the Solar System. It starts at 30 AU - that's 30 times farther from the Sun than the Earth. From there it stretches for another 2 billion miles!

An enormous dragon circles the northern celestial pole. The constellation Draco contains a star that was the pole star at the time of the pharaohs, some interesting galaxies and the most complex planetary nebula yet discovered.

Constellations, asterisms, galaxies and star clusters are all groups of stars. So how are they different? Why isn’t the Big Dipper a constellation? Where are the globular clusters? And if Saturn is in Virgo, has it left the Solar System?

How do asteroids get their names? You have to discover an asteroid to name it, but you still can't name it after yourself or your cat. You also can't buy the naming right, though someone might give theirs to you.

Far beyond Uranus is another blue planet, one named for the Greek sea god. It could well have been named for a god of winds as it's the windiest place in the Solar System. Find out more about Neptune, the planet that was discovered using math.

Can sound travel in space? The short answer is no, but it's not so simple. We can't hear the sound waves, but the Sun produces them. And then there's the black hole that astronomers have detected endlessly singing a B-flat over tens of thousands of light years.

This ice giant is twenty times farther from the Sun than we are. It orbits lying on its side so that half the planet can be dark for over twenty years at a time. This is the planet Uranus, discovered by William Herschel in 1871 and nearly named George!

Quasars are the brightest and most distant objects in the universe. And when we see them we are looking into the past, to a time even before our Sun and Solar System existed.

Nebulas are great clouds of gas and dust in the spaces between the stars. Some of them are made from dying stars. Others are the nurseries for new stars. Here are ten facts about these surprising objects.

It's the planet most likely to mistaken for a UFO. It spins backwards on its axis. A day is longer than a year. It's Venus! Some call it Earth's twin, but I think you'll see that we don't have all that much in common.