This is a very well-organized tutorial on how to read, construct, and interpret three basic kinematic graphs: Position vs. Time, Velocity vs. Time, and Acceleration vs. Time. It includes animated examples, links to...

Quantiki is a wiki created for the quantum information science research community. It includes news of recent advances in quantum information, a list of research groups in the field, and reference and instructional...

This site by NASA provides an introduction to contrails, the clouds of ice that form around the small particles in aircraft exhaust. The site presents explanations for how and where these contrails form as well as...

This website is dedicated to the amateur astronomer interested in Deep Sky Object Observation. It begins by explaining how these objects are divided into different types, mainly nebulae, and how they are classified,...

This websites main objective is to instruct the user on the phenomenon of Occulations. It starts off by explaining what an occulation is and giving examples of it: eclipses, transits, etc. The importance of occulations...

This website offers an introduction to Dark Matter. First observed in 1933 by Fritz Zwicky, when studying the mass distribution of the Coma Cluster, Dark Matter has been a mystery to scientists because it does not...

The main objective of this website is to teach the amateur astronomer how to perform spectroscopy. The first part of the website is dedicated to establishing a theoretical foundation, in which the process of...

This website discusses the Fermi Paradox, which is about the chances of life beyond Planet Earth. The first part estimates the possibility of existence of other intelligent civilization in our galaxy by solving the...

This site by the University Corporation for Atmospheric Research (UCAR) provides an overview of the earth's atmospheric "greenhouse effect." Diagrams and one short video help present the key ideas. Two related...

This site from NASA contains information about constructing a miniature drop tower to investigate the effects of free fall. The tower incorporates a video camera mounted on the falling platform. The site provides...