American Museum of Natural History
Meet the Universe's Main Attraction ... Gravity
Learners read a short description about gravity and what it does and then explore the two ideas about how gravity works. After gaining a better understanding of the concept, individuals participate in a thorough experiment on what would...
NASA
Nasa: Imagine the Universe: Supernovae (Advanced)
Supernovae are divided into two basic physical types, including a description of supernova types and how they are classified based on the existence of hydrogen spectral lines. Definitions of key terms are provided.
University of St. Andrews (UK)
University of St. Andrews: Orbits and Gravitation
A page describing the physics, mathematics, and historical figures associated with planetary motion, satellite motion, and universal gravitation.