The Solar System was formed around 4.6 billion years ago from a giant cloud called a nebula, mainly made up of hydrogen gas and dust. The nebula collapsed under its own gravity and, as it did ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...

In a new paper, a team of NASA researchers proposed a mission that would fly spacecraft in a tetrahedral formation near the sun, which could help to uncover some of the universe’s biggest mysteries.