How Far is the Closest Star to Us?
The closest star to us apart from the Sun is Proxima Centauri, in the Alpha Centauri star system. It lies at a distance of 4.3 light years from the Earth.
How Big is Our Galaxy?
If we could travel at the speed of light, it would take around 100 000 years to reach the other end of our Galaxy.
What is the Predicted Size and Weight of Gaia?
Based on the current design, Gaia will be 3 metres high, 11 metres across, and will weigh around 2000 kg.
What Does Gaia Mean?
For ancient Greeks, Gaia was the goddess of Earth, the Universal Mother. More recently, this name was adopted for a theory which states that the Earth (including all living organisms, the biosphere, the rocks, the air, and the oceans) behaves like a living system in its own right. Now it is the name given to this ambitious project to discover the structure, origin and evolution of our Galaxy.
|Gaia Home page|