Learn how to write a hypothesis with this step-by-step guide. Get hypothesis examples and free PDF worksheets to download and print.| Science Notes and Projects
Get Pluto facts. Learn about the dwarf planet, which was once considered the ninth planet of the solar system.| Science Notes and Projects
Get facts about the planet Mercury. Learn about its orbit, temperature extremes, and atmosphere. Discover whether life on Mercury is likely.| Science Notes and Projects
Discover interesting Mars facts. Learn about the size, moons, surface features, and seasons of the fourth planet from the Sun.| Science Notes and Projects
Learn about gas giants in astronomy. Discover the definition, characteristics, formation, and exploration and get free resources for study.| Science Notes and Projects
Explore Saturn facts with this detailed guide covering the planet's rings, moons, atmosphere, structure, missions, and viewing from Earth.| Science Notes and Projects
Learn what gravity is in physics and astronomy. Get the definition, formulas, and table of gravity on other planets.| Science Notes and Projects
Get the definition of a light year in astronomy. See examples of distances in light years and how the unit compares with parsecs and AU.| Science Notes and Projects
Get the definition of a gas in science. See examples of gases including elements, mixtures, and gases in everyday life.| Science Notes and Projects
Get Venus facts. Discover whether it is the hottest planet, how likely life is, and other fun facts about Venus, the second planet.| Science Notes and Projects