Thanks to new measurements of very old meteorites, the current consensus on the Solar System's age is 4.5684 billion years old, with an uncertainty of 240,000 years—a tiny fraction of a percent.

– Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago.

Dr. Rider-Stokes and his team’s findings indicate that both inner and outer solar system planets likely formed at almost the same time, around 4.564 billion years ago.

At the outer reaches of our solar system, astronomers believe there is a cloud of icy planetesimals—named the Oort cloud—orbiting our sun at a distance of between 0.03 to 3.2 light years (for ...

Thanks to new measurements of very old meteorites, the current consensus on the Solar System's age is 4.5684 billion years old, with an uncertainty of 240,000 years—a tiny fraction of a percent.

– Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago.