A list of answers to many questions related to quasars and active galaxies.

Supernovae are divided into two basic physical types, including a description of supernova types and how they are classified based on the existence of hydrogen spectral lines. Definitions of key terms are provided.

A detailed description of a supernova developing from a single massive star. There is a quiz, related links, animation, lesson plans, and an FAQ sheet available also.

A brief description of supernova remnants with many embedded links to help define terms used in the description. The specific topics are age and the importance of remnants to us and the types. Definitions of key words are provided.

In this very detailed lesson plan from NASA, students investigate wavelength and frequency within the electromagnetic spectrum.

View this video that relates Newton's Law of Motion to the operation on airplanes. Learn how mass of a person can be calculated by dividing the weight of the person to the force of gravity. [12:08]

NASA's Johnson Space Center is located near Houston, Texas and was constructed as "the primary center for: design, development testing of spacecraft and associated systems for human flight; selection and training of astronauts; planning and conducting human space flight missions; and extensive participation in the medical, engineering scientific experiments carried aboard space flights."

NASA's Jet Propulsion Laboratory at the California Institute of Technology is "the lead US center for robotic exploration of the solar system."

A video timeline of the discoveries and key milestones in the history of space exploration. [11:23]

Constellation of articles, images, diagrams, posters, videos, and more on the subject of the search for planets, particularly Earth-like planets, outside our solar system.

This exciting site provides a wealth of shuttle information, tours and exhibits at the center, and historical information.

Explore the depths of space and science comprehensive information about the meteor showers in 2004, the transit of Venus, virtual reality, and other interesting science history.

This article discusses the ocean phenomenon known as La Nina, its effects, and its formation.

View a global map from NASA's Earth Observatory that shows land surface temperature from February 2000 to November 2008. Learn how land surface temperature is measured and monitored.

This NASA video demonstrates how Newton's laws apply to the landing of an airplane. Learn how to calculate the minimum runway length and discover the three phases involved in landing an airplane. [13:45]

This NASA video demonstrates how Newton's law of motion applies to the lift of an airplane. Watch as an instructor shows student how an airplane overcomes the downward force of its weight by changing the air molecules colliding with the wings. [14:10]

This set of activities teaches students about the big picture of science using Mars as an example: how to collect data, use evidence, and look at models.

In depth information about news and events happening at the Marshall Space Flight Center in Huntsville, AL. Includes photos and videos of numerous astronomical events.

The Langley Research Center is one of NASA's aerospace technology centers. It includes information on the Research Center, news reports, current research, educational tools, and links to further information.