February 15 is Galileo Galilei's birthday. Galileo was an Italian natural philosopher who was the key figure at the beginning of the scientific revolution and made several major contributions to its progress. Find out more and what else occurred on February 15 in science history.| 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
Here are most than 10 examples of plasma, the most abundant state of matter in the universe. An explanation of plasma properties is included.| Science Notes and Projects
Learn about the solar system in astronomy. Get its definition, discover the planets in order, and get interesting facts.| Science Notes and Projects
Get the mass definition in science. Learn what mass is, how it differs from weight, and how it applies to scientific laws and formulas.| Science Notes and Projects
Helium is the second element of the periodic table. These helium facts contain general information, history and chemical and physical data.| Science Notes and Projects
Learn what an atom is in science. Get the atom definition, examples, and learn about atomic structure, size, and shape.| Science Notes and Projects
Hydrogen is the first element of the periodic table. These hydrogen facts include general info, history, and chemical and physical data.| Science Notes and Projects
