April 18th, 2014
Waning Gibbous Moon
moon
Talia Butler

Science Fair ideas from Planet Fun

Science fair season is here!  This is a great time of year for your family to spend some quality time together learning about science and how fun it can be.  With that in mind – and with the help of Planet…

Robert Bigelow

A Different Star

If we could travel back in time several thousand years to observe the night sky, we would notice two main differences compared to the night skies of today.   The most obvious would be the lack of a sky glow…

eric

How Big? A look at figuring size and scale

A few days ago, I needed to increase the size of an astronomical table to make it easier for my aging eyes to read. It was about half the size of a standard sheet of paper, so I decided to…

Seth Jarvis

Cosmic Quiz – Flag Waving on the Moon

Joseph Amundsen’s recent Cosmic Quiz Question asks why the flags placed on the moon by the Apollo astronauts appear to be flapping in the wind.

eric

What is dark matter?

The short answer is no one really knows. Dark matter is a name given to something that, so far, has only been detected by the gravitational force that it exerts on visible matter and light. In fact, that gravitational force…