I Could’a Been A Contender… NGC 2903 by Warren Keller
This beautiful Leo spiral galaxy - NGC 2903 - is only some 20 million light-years away and is one of…
Possible New Impact on Jupiter
[/caption] Amateur astronomer Anthony Wesley from Canberra, Australia captured an image of Jupiter on July 19 showing a possible new…
What is Entropy?
Perhaps there's no better way to understand entropy than to grasp the second law of thermodynamics, and vice versa. This…
Acceleration Due to Gravity
[/caption]The acceleration due to gravity is the acceleration of a body due to the influence of the pull of gravity…
Visible Light
[/caption] Of all the wavelengths in the electromagnetic spectrum, those that lie between 400 nm to 700 nm are the…
Book Review: Magnificent Desolation, by Buzz Aldrin
[/caption] I very much enjoyed chatting with Buzz Aldrin a couple of weeks ago, for some stories leading up to…
How to Handle Moon Rocks and Lunar Bugs: A Personal History of Apollo’s Lunar Receiving Lab
50 lbs. of moon rocks. That's how much weight was allocated for the Apollo 11 astronauts to bring back lunar…
Plane of the Ecliptic
[/caption] Plane of the ecliptic, also known as the ecliptic plane, is a phrase you will often hear in astronomy.…
Minor Planets
[/caption] Minor planet is a term used to refer to a celestial object - that is not a planet or…
Habitable Planet
[/caption] The term "habitable planet" seems rather broad. Does it mean that it is habitable for humans? Is it merely…