Abby Cessna
Summer Solstice
The summer solstice occurs once a year, and there is also a winter solstice each year. During both solstices, the…
Astrolabe
[/caption] An astrolabe is an ancient tool used in solving problems that involve time and the position of the Sun…
Astronaut Costume
Many children dream of going to space one day. While you cannot send them there now, you can at least…
Gravity for Kids
[/caption] What keeps us from floating off into space? Why does something I drop fall to the ground? Kids are…
Armillary Sphere
[/caption] Despite the fact that the term “armillary sphere” sounds like a high-tech weapon or something from a science fiction…
Magnetic North Pole
[/caption] The Earth has a magnetic field, known as the magnetosphere, that protects our planet from the particles of the…
What Are Planets?
[/caption] Throughout history, the definition of what a planet is has changed and meant various things at the same time…
Solar System Projects for Kids
[/caption] Discovery Education has eight projects on the Solar System that you can do with a class or a single…
Solar System Orbits
[/caption] One of the International Astronomical Union’s (IAU) requirements for a celestial body to be classified as a planet (or…
Radius of the Planets
[/caption] One way to measure the size of the planets is by radius. Radius is the measurement from the center…