TED-Ed: Einstein's twin paradox explained | Amber Stuver

The video explores the twin paradox, where identical twin astronauts, Tara and Stella, experience different aging rates due to Stella's space journey at 86.6% the speed of light. Special relativity explains that time passes slower for Stella, resulting in her being younger than Tara upon return. The Lorentz factor and light signals are used to illustrate time dilation and length contraction. The paradox is resolved by understanding that Stella's change in reference frames makes her a non-inertial observer, unlike Tara, who remains at rest.

What experiment do Tara and Stella volunteer for on their 20th birthday?

How does the speed of Stella's spaceship compare to the speed of light?

Explain the concept of length contraction as described in the text.

What is the Lorentz factor and how does it relate to time dilation?

What conclusion does Tara reach about their ages when they reunite?

How does Stella's perspective on time differ from Tara's during the journey?

What misunderstanding does Stella have regarding inertial observers?