In 2017, NASA discovered and later confirmed the first interstellar object to enter our solar system. It wasn't aliens. But artist impressions of the object (called 'Oumuamua, the Hawaiian word ...

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 ...

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun.

The way people think of the Solar System has changed many times throughout history. Before the development of the telescope, these ideas were based on what could be seen with the naked eye.

Placed near schools, the solar charging system that literally looks like a cow has “power milk”—white, portable batteries—­that students can take home to their families. Around 500 kids ...