Every planet in the solar system is hurtling toward Earth for an epic series of collisions. We use Space Sim to break down ...

What: A newly identified star system, Gaia GIC1, exhibits unusual brightness variations consistent with a large planetary ...

In the crowded early Solar System, young planets frequently collided and reshaped each other. But Mercury stood out. It formed unusually close to the Sun. Mercury’s days are longer than its years. It ...

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation. Initially, the planet was barren and inhospitable, missing water and ...