What Do We Know About Solar System

Our solar system consists of our star the sun and everything bound to it by gravity the planets mercury venus earth mars jupiter saturn uranus and neptune dwarf planets such as pluto dozens of moons and millions of asteroids comets and meteoroids.

What do we know about solar system.

Explore our solar system in depth 10 things to know about our solar system. Because of its high speed 196 000 mph or 87 3 kilometers per second and the trajectory it followed as it whipped around the sun scientists are confident oumuamua originated beyond our solar system. Within it there are at least 100 billion stars and on average each star has at least one planet orbiting it. We get a figure of around 4 568 billion years if we do that.

The planetary system we call home is located in an outer spiral arm of the milky way galaxy. Here are 11 need to know things about our solar system. Our solar system is just one specific planetary system a star with planets orbiting around it. What we know it came from outside the solar system.

This means there are potentially thousands of planetary systems like our solar system within the galaxy. We can look at the oldest meteorites or the ones which show the most extreme lead ratios to try and estimate the age of the solar system. Beyond our own solar system we have discovered thousands of planetary systems orbiting other stars in the milky way. While earth is only the fifth largest planet in the solar system it is the only world in our solar system with liquid water on the surface.

The name earth is at least 1 000 years old. Other solar systems our milky way galaxy is just one of billions of galaxies in the universe. The story of our quest to discover how our solar system formed is littered with false starts and one that astronomers are still refining. It s an idea that lasted for more than 1 000 years dating back to the days of aristotle and ancient greece.

The world s greatest thinkers originally had the earth at the centre of creation with the sun moon planets and stars circling around us. Just slightly larger than nearby venus earth is the biggest of the four planets closest to the sun all of which are made of rock and metal. 10 need to know things about the solar system.