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 may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...

Earth" planet was discovered by researchers. It is not believed these planets are more common than previously thought.

A new look through decades-old data has unveiled some of the most compelling evidence yet of a hidden ninth planet in the far ...

"If it's one or two Earth masses, which is still a pretty big planet, our inner Solar System would still remain quite nice," says Simpson. "We might experience slightly hotter summers or colder ...

A meteorite found in Antarctica in 2012 suggests Earth may have formed with the materials needed to make water, a new study ...

For years, astronomers have been searching for a ninth planet in our solar system (after giving Pluto the old heave-ho and demoting it to a dwarf planet) and now researchers say they’ve found a ...

Indeed, other planets, dwarf planets and moons in our solar system do have seasonal cycles — and they can look wildly different from the ones we experience on Earth, experts told Live Science.

Earth and Mars are mysteriously low in elements like copper and zinc, which are crucial for planetary chemistry and potentially life. A new study overturns old theories by showing that these elements ...

Observations of exoplanets typically provide astronomers little more than an orbit, a mass and a radius. If the radius and ...