Astronomers have, for the first time, spotted a planet that is considered to be in the "Goldilocks zone," meaning that its environment is just right to sustain life: not too hot, not too cold. Scientists approximate that...

The Two Micron All Sky Survey at IPAC website provides an image gallery of the solar system's objects, Jupiter's moons, H II regions, star formation regions, and reflection nebulae, open star clusters, globular star...

This case study uses the example of Pluto: how do we determine what a planet is? The lesson compares orbital parameters like semi-major axis, orbital period and orbital resonance of different planets. The material would...

The Association of Lunar and Planetary Observer's web pages, an organization of amateur astronomers interested in observing solar system objects. The site features sections on youth programs, solar, lunar, eclipse,...

This portal provides access to an extensive selection of maps, imagery, and geospatial data for the Moon, Earth, Venus, Mars, Jupiter, and other planetary bodies and moons. Some materials are available for online viewing...