The Celestial Sphere

Pupils often wonder how we know the distance to various stars. Starting with a thought experiment and progressing to a physical experiment, they determine the brightness and distance to various stars. The evaluation requires...

Digital compass alignment enables navigation of the skies with true orientation at any time. Just point to the sky or "aim for the stars!" This application acts as a virtual telescope, allowing you to zoom in on any object that is...

According to Carl Sagan, we are all made of star particles. The second video in a series of 16 explains what happened after the big bang. It discusses cosmic background radiation, chemistry, galaxies, heavy elements, and the creation of...

Explore the validity of a famous quote by Carl Sagan, "We are made of star stuff." An episode of the ACS Reactions playlist explains how deteriorating stars became the origin of all the elements in our world. Learners consider different...

Star light, start bright! What do the brightness and color of stars tell us about the stars we see at night? Learners explore the life of stars with an information-packed video. Topics include the relationship between mass and...

Up to 75 percent of the stars in the Milky Way are red dwarfs, yet we can't see any from Earth. The video explains what makes red dwarf stars unique. It highlights the potential for finding aliens or a planet humans could live on once...

What happens at the end of the life cycle of a star? A lesson in the Socratica Astronomy playlist shows three ways a star dies: white dwarf, black hole, and neutron star. Each ending depends on the mass of the original star.

Sugar and spice and everything nice ... and a little bit of star stuff! An enthusiastic presentation describes the elemental makeup of the human body and how these materials originated in a red giant star. As an episode of a larger solar...

Illuminate the information about stars. Pupils respond to 10 multiple choice questions about stars. The questions cover topics such as the size of the Milky Way Galaxy, the Sun, and the life cycle of a star. The resource works as a...

A celestial body's distance from Earth makes studying its characteristics much more difficult. Learn how scientists use indirect measures to determine the size of stars. The interactive activity has individuals adjust the size of binary...