Have you ever wondered just how big is the planet Mars? Well, wonder no more! Mars has a diameter of 6,792 km or 4,221 miles. The diameter of Mars is about 1/2 that of Earth’s diameter.
So Just How Big is the Planet Mars?
Posts by: Greg - Staff Writer
Jupiter Red Spot Facts
Today, I want to take a closer look at Jupiter’s Great Red Spot. I thought it would be fun if we discussed some Jupiter Red Spot Facts.
Favorite Reader Comments on Outer Space Universe
One of our favorite reader comments on Outer Space Universe
Amazing Winter Planetary Alignment
If you love seeing spectacular celestial bodies getting close to one another, then get ready! Just after sunset on February 25, 2012 there will be an amazing winter planetary alignment. It really doesn’t get any easier than this my fellow space fans. Here are your instructions: when the sun goes down on February 25th, put your winter coat on (optional), go outside, take a deep breath, look to the west and say WOW!
Close Up of the Horsehead Nebula in Orion
There probably isn’t a nebula more recognizable than the Horsehead Nebula. Located in the Constellation Orion and part of the Orion Molecular Cloud Complex, this famous nebula has been capturing the imagination of astronomers for years. Let’s take a close up look at this nebula.