A+ Research & Writing for High School and College - http://www.ent.iastate.edu/imagegallery/
From Iowa State University, this web site contains an extensive photo collection of bugs, beetles, butterflies, and plant diseases.
Astronomical Applications: Data Services - http://aa.usno.navy.mil/data/
Obtain "fundamental astronomical reference data, the position, brightness, and other observable characteristics of celestial bodies": Sun and Moon rise and set times, phases of the Moon, eclipses, planetary transits, positions of the Sun and Moon, the seasons (equinoxes, solstices, perihelion, aphelion), celestial navigation, and more. Enter data and produce your own table. Includes a navigational star chart. From the Astronomical Applications Department of the U.S. Naval Observatory.
Galileo: Journey to Jupiter - http://www.jpl.nasa.gov/galileo/
Check out the extensive collection of images and data from Jupiter, read a brief introduction to the Galileo mission, and take a journey through Galileo's exploration of our solar system's largest planet.
NASA Jet Propulsion Lab - http://www.jpl.nasa.gov/
Information about space missions & technology, the earth, the solar system and the universe. Links to NASA missions, telescopes, and other astronomy sites.
National PLANTS Database - http://plants.usda.gov/
The PLANTS database, from the National Plant Data Center, includes checklists, species abstracts, distributional data, crop information, plants symbols, plant growth data, references and other plant information.
Nature's Genome Gateway - http://www.nature.com/genomics/
A comprehensive web resource devoted to genomics. This web site includes a library of original research papers, a news service, a post-genomics section and a list of links to other genomics sites on the web.