Solar System
How Big is Jupiter?
[/caption] I'm sure you've heard that Jupiter is the largest planet in the Solar System, but just how big is…
Tenth Planet: The Next World in the Solar System
When astronomers discovered a tenth planet in the Solar System, no known as Eris, they had to develop a whole…
What Color is Venus?
Here's a question: what color is Venus? With the unaided eye, Venus just looks like a very bright star in…
When Was Pluto Discovered?
[/caption] Five of the planets are visible with the unaided eye and have been known about for thousands of years.…
When Was Jupiter Discovered?
[/caption] Were you wondering when was Jupiter discovered? Well, there's no way to know. Jupiter is one of the 5…
Who Discovered Saturn?
[/caption] Were you wondering who discovered Saturn? Well, nobody knows. Here's the problem. Saturn is one of the 5 planets…
When Was Venus Discovered?
Were you wondering when was Venus discovered? Actually, there's no way to know. Venus is one of the 5 planets…
Who Discovered Pluto?
Pluto is incredibly faint. You need a powerful backyard telescope to even see it as a dot, so it's not…
Comets Posing as Asteroids (or is the the other way around?)
[/caption] Asteroids are rocky bodies which belong between Mars and Jupiter. Comets are icy bodies that belong way out beyond…
Jupiter – Our Silent Guardian?
[/caption] We live in a cosmic shooting gallery. In Phil Plait's Death From the Skies, he lays out the dangers…