It’s huge. In fact, it’s astronomical! The Colorado Scale Model Solar System depicts the Sun, the planets, and the distances between them all on the same scale of 1 to 10 billion. That is, the real ...

Over millions of years, these objects grew larger, sweeping up material in their orbits and becoming the planets we know today. This model of solar system formation is known as the nebular hypothesis.

The search for life beyond Earth is a key driver of modern astronomy and planetary science. The U.S. is building multiple ...

Astronomers using planet-hunting satellites have discovered a rare solar system with six planets moving completely in sync with one another, as if they were untouched by any outside force since ...

"An early solar system containing five giant planets was proposed after numerical models indicated that this is more likely to reproduce the architecture of the current solar system, reproducing ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...