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!

In the film Deep Impact a teenage astronomer discovers a comet with a small telescope. In reality, teenage astronomers are more likely to make their discoveries in front of a computer - finding supernovae, pulsars, asteroids. The youngest discoverer was ten. Let them inspire you.

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.

Here is an entertaining overview of astronomy small enough to put in your pocket. Not only the Big Bang, black holes, exploding stars, visiting Mars and all the rest of the cosmos, but plenty of laughs along the way. I enjoyed it - you must know someone who would too.

How much do people know about our next-door neighbor the Moon? For example, does the full moon drive people crazy? Apparently not - unless maybe they're astronomers trying to observe faint nebulae. Here are ten common moon myths and lunar lapses.

Music of the spheres? Here’s a harp to play it on: Lyra, the harp of Orpheus that almost brought his beloved back from death. The constellation has one of the sky’s brightest stars, a star that is really four stars, and a colorful donut.

Someone must have left the door open, because the skies are full of dogs. You can see the dogs of Orion and the hunting dogs of the shepherd Bootes in pursuit of the Great Bear. There is also the Running Dog Nebula and the memory of poor Laika, the first cosmonaut, who perished in space.

Pluto was once the last outpost of the Solar System. Now we realize that it's the gateway to the Kuiper Belt, a disk made up of rubble left over from the formation of the Solar System. The Kuiper Belt is big and it's cold and the Sun would just look like a bright star from there.

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.

There are three constellations named for dogs, but what about cats in the sky? There is astrocat Felicette who went into space and returned safely to Earth, but also constellations of big cats and a pawprint 50 light years across.