This is where we live and where our nearest neighbors are. Here is a tour of the planets and their moons, asteroids and comets, and far out to Pluto and Charon, the Kuiper Belt and the Oort Cloud.
10 Amazing Facts about the Solar System
Our Solar System is pretty amazing. There's a planet that orbits lying down and a surprising number with rings. The Sun is losing mass at the rate of 300 million tons a minute, but it's nothing to worry about. And how did bits of Vesta end up on Earth?
Bode and Bode's Law
Johann Elert Bode, the author of the greatest star atlas of the Golden Age of star atlases, is better known today for Bode's Law. Strangely, Bode's Law is neither a law nor original to Bode. So what was it? How did it inspire the Celestial Police? How did Neptune ruin it all?
Comets & Asteroids
Articles about these leftovers from forming the larger Solar System bodies out of a cloud of gas and dust. They attract our attention if they come too near Earth.
Copernicus - the Revolution
In the 16th century everyone knew that Earth was the center of the cosmos. But this made it impossible to predict the motions of heavenly bodies, even if they moved in elaborate circles within circles. Copernicus turned the idea on its head and put the Sun at the center. A revolution had begun!
Earth & Moon
Articles about our home - and our close companion, object of awe, subject of poetry and the only other world on which humans have walked.
Galileo´s Daughter - book review
Most people think of Galileo as the man who is a symbol of the heroic voice of truth against a powerful reactionary Church. However this mythic Galileo is not the one Dava Sobel´s book, "Galileo´s Daughter", reveals through his faith, his work and his daughter´s love.
Outer Solar System
The Trans-Neptunian objects (TNOs) are here. The region includes the Kuiper Belt, scattered disk and the Oort Cloud. The best known objects are Pluto and its moons, but there are comets too.
Planets & Moons
Earth´s companion planets and their moons
Solar System - Our Neighborhood
Come tour the Solar System. It's our neighborhood, the star system in which we live. The Sun's gravity holds it all together - planets, dwarf planets, moons, asteroids, comets, Kuiper Belt objects. See what lies between the Sun and the farthest edge of the Oort Cloud.
Solar System - Tour for Kids
Take a quick tour of the Solar System, the star system where we live. It's our neighborhood of the Milky Way. Find out what lies between the Sun and the edge of the Oort Cloud.
Solar System - Tour for Kids
Take a quick tour of the Solar System, the star system where we live. It´s our neighborhood of the Milky Way. Find out what lies between the Sun and the edge of the Oort Cloud.
The heart of the Solar System and what sustains life, the Sun is our star.
The Transit of Venus - book review
In the north of England in the early 17th century, there was an amazing circle of astronomers. They were well ahead of their time and included the first two people ever to observe a transit of Venus. What ended this brief flowering? Peter Aughton tells the story.
Top Astronomy Stories 2012
What were the big astronomy stories of the year 2012? Here is my choice of the top ten plus a non-story. What do you think?
Transit of Venus - Captain Cook 1769
How big is the Solar System? 18th century astronomers tried to find out by sending expeditions around the world to measure a transit of Venus. One of these was Captain Cook's voyage to Tahiti. He went under the auspices of the Royal Society, but he carried secret orders from the government.
Transit of Venus - Measuring the Solar System Astronomy Homepage | Editor's Picks Articles | Top Ten Articles | Astronomy Site Map
On June 8, 2004 millions of people witnessed an event that no one still alive had ever seen: a transit of Venus. Another one will occur in June 2012 and then not again for over a hundred years. What is a transit of Venus? How did it help in working out the size of the Solar System?
Think your link belongs here? Use the contact page to let this editor know.