Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

Our solar system’s origin story spans billions of years and involves clouds of gas, cosmic collisions, and planetary ...

When I need to remember the order of the planets I recite the ... so it helps to have a complimentary “planet” label if we want to talk meaningfully about all the objects that orbit the ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to ...

Five planets are moving into a rare alignment, which will be visible from Earth this week. Mercury, Venus, Mars, Jupiter and Saturn are lining up — in that order — for the first time since ...