Guide to Space
How Cold Are Black Holes?
Black holes absorb everything that falls into them, including photons of light and heat. So what does it mean to…
What is the Largest Desert on Earth?
Despite what you might think, the largest desert in the world is actually in Antarctica. In addition to being the…
What is the Speed of Light?
Since the late 17th century, scientists have been attempting to measure the speed of light, with increasingly accurate results
What Are The Lagrange Points?
There are places in the Solar System where the forces of gravity balance out perfectly. Places we can use to…
What are the Planets of the Solar System?
The eight planets of the Solar System are a diverse and interesting bunch, ranging from airless and habitable terrestrial bodies…
Will Our Black Hole Eat the Milky Way?
As soon as you learn about the supermassive black hole at the center of the Milky Way, your next thought…
How Close Can Moons Orbit?
The Moon is our constant companion, shining away in the night. But how close could the Moon get before it's…
How Many Moons are in the Solar System?
Contrary to what was once believed, the Solar System is home to hundreds of moons. Beyond Earth, there are many…
What Are Magnetars?
Magnetars are neutron stars with massively boosted magnetic fields. How do this stellar remnants form, and what would happen if…
Messier 22 – The Sagittarius Nebula
In the direction Sagittarius constellation, some 14,000 light years from Earth, lies the bright Sagittarius globular star cluster (aka. Messier…