Guide to Space
Is the Universe Perfect for Life?
Doesn't it feel like the Universe is perfectly tuned for life? Actually, it's a horrible hostile place, delivering the bare…
Jupiter’s Moon Callisto
With 67 confirmed satellites, Jupiter has the largest system of moons in the Solar System. The greatest of these are…
Jupiter’s Moon Ganymede
In 1610, Galileo Galilei looked up at the night sky through a telescope of his own design. Spotting Jupiter, he…
Why Do Red Giants Expand?
We know that the Sun will last another 5 billion years and then expand us a red giant. What will…
How Are Galaxies Moving Away Faster Than Light?
So, how can galaxies be traveling faster than the speed of light when nothing can travel faster than light? I’m…
What are White Holes?
Black holes are created when stars die catastrophically in a supernova. So what in the universe is a white hole?…
Is Jupiter Our Friend Or Enemy?
Like me, you’re probably a little ego-geocentric about the importance of Earth. It’s where you were born, it’s where you…
Saturn’s Moon Titan
Between its methane lakes, dense atmosphere, and subterranean ocean, Saturn's largest moon (Titan) is a wonder to behold!
Jupiter’s Moon Europa
Jupiter's four largest moons - aka. the Galilean Moons, consisting of Io, Europa, Ganymede, and Callisto - are nothing if…
Can You Kill a Star With Iron?
Since the energy required to fuse iron is more than the energy that you get from doing it, could you…