What Are YOU Doing for the International Year of Astronomy?
In 1609, Galileo Galilei looked at the heavens through a telescope for the first time, and things on Earth haven't…
Diagram of the Solar System
[/caption] This image contains all of the largest objects in the Solar System. You can print this diagram of the…
This Week’s “Where In The Universe” Challenge
It's Wednesday, so that means its time for another "Where In The Universe" challenge to test your visual knowledge of…
New “Sunglasses” Help Astronomers See Light Near Black Holes
[/caption] Although we can't actually see a black hole, we can see the black hole's effect on nearby matter. But…
Ancient Galactic Magnetic Fields Stronger than Expected
[/caption] The origin of magnetic fields in our universe is a mystery. But magnetic fields are a key part of…
Polaris Brightness Variations are Revived, Astronomers Mystified
[/caption] Polaris is a well known Cepheid variable, but its periodic brightness variations have been steadily decreasing in amplitude for…
Model of the Solar System
Everyone seemed to enjoy the answer to my daughter's question, "what's the biggest star?", so I thought I'd give you…
What is the Solar System?
[/caption] The Solar System consists of the Sun, and everything bound to it by gravity. This includes the 8 planets…
Carnival of Space #63
[/caption] Another new host for the Carnival of Space. This week, the whole carnival moves to the home of the…
Podcast: Quasars
Last week we talked about galaxies in general, and hinted at the most violent and energetic ones out there: active…