The Oort Cloud is named after Dutch astronomer Jan Hendrik Oort. Oort speculated that the Solar System was surrounded by a vast spherical cloud of comets.
The Oort Cloud: Made of Comets, Has Massive Diameter
Bodies and Planets Found in Our Whole Solar System
Our solar system is a nine planet system and is part of the Milky Way Galaxy. There is a bit of controversy around exactly how many planets there are in the solar system because some astronomers don’t count lowly Pluto.
The Milky Way Galaxy: a Funny Name
We live in the Milky Way Galaxy. But, why is it called the Milky Way Galaxy? Where did this name come from?
Our Universe: Expanding, Evolving, and Massive in Scale
The Universe contains all the physical things that we can see and touch like matter as well as all the space in between. There are billions of galaxies in The Universe.
Extraterrestrial Aliens: Alien Creatures from Other Planets
Extraterrestrial aliens are creatures that come from planets other than Earth. They may look like humans, but an alien may also be completely different from what we know.