Guide to Space
How Many Planets are There in the Galaxy?
Humans have wondered how many planets could exist within our Galaxy, and some of our best estimates say there could…
What are Molecules?
Molecules are the basic buildings blocks of life and matter, and our understanding of them has evolved considerably over time.
What is a Magnetic Field?
Magnetic fields are fascinating things. They are intrinsic to Iron magnets, but can also be generated by electrical circuits and…
Mars’ Moon Deimos
The smaller of Mars' two moons - Deimos - is a strange mysterious satellite. And while its origins are still…
What is a Nova?
We’ve talked about supernovae plenty of times, but what about just regular, plain old novae? What are they, and how…
What Is an Earthquake?
Earthquakes are a regular part of our planet's geological activity, with over 3 million happening a year. But to human…
What Are Cosmic Voids?
We talked about the biggest structures in the Universe, but what about the opposite? The biggest empty spaces in the…
What is Binding Energy?
When it comes to everything from stellar objects to atoms and chemical compounds, binding energy is the measure of what…
What are Volcanoes?
Volcanoes are a powerful force of nature, and can be found all over the Solar System. In addition to hot…
What is the Wettest Place on Earth?
Several different locations around the world have been called the "wettest place on Earth" at one time or another. Here…