Guide to Space
What Are The Diameters of the Planets?
The planets of our Solar System vary considerably, with some being a fraction of Earth's diameter, and others many times…
Messier 15 (M15) – The Great Pegasus Cluster
Located in the Pegasus constellation, some 33,600 light years from Earth, is the M15 Great Pegasus Cluster, one of the…
What Are Virtual Particles?
As we’ve learned, black holes can evaporate over time thanks to the creation of virtual particles at the edge of…
Are There Antimatter Galaxies?
One of the big mysteries in astronomy is what happened to all the antimatter? Is it possible that it’s actually…
What Are Planetary Transits?
When space objects pass in front of other space objects, we call that a transit. And it turns out, they’re…
How Was the Solar System Formed? – The Nebular Hypothesis
Billions of year ago, the Sun, the planets, and all other objects in the Solar System began as a giant,…
The Orbit of Mars. How Long is a Year on Mars?
Mars and Earth have many similarities, but the length of a year is not one of them! Compared to Earth,…
What is the Coldest Planet of Our Solar System?
Neptune, being the farthest planet from the Sun (sorry Pluto!) is now recognized as also being the coldest body in…
10 Interesting Facts About Earth
We've lived on planet Earth all of our lives, but how much does the average person know about the planet…
Can Stars Be Cold?
Stars are hot, we know that, everyone knows that. But are there “cold stars”? It all depends on what you…