This image, from the Lunar and Planetary Laboratory, illustrates the approximate relative sizes of the Sun and planets and their relative locations. Although distance is not to scale, viewers can see that the small...
People have long wondered about the existence of worlds outside of our solar system. Since 1995, significant progress has been made in the search for extrasolar planets, mostly gas giants the size of Uranus or larger,...
This interactive feature lets students compare the sizes of the planets in our solar system. Users can select two solar system bodies (planets, Sun, Earth's moon) and view side-by-side images at the same scale, along...
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...
Manage your resources
Save, organize, and share resources that you find.
Subscribe to bulletins
Automatically be notified about new resources that match your interests.
It's easy, fast, and FREE!