Lesson 1 of 4
A tour of cosmology: the Big Bang, stars, galaxies, and black holes
@jay invited you
4 lessons · Novice
About this study
“A tour of cosmology: the Big Bang, stars, galaxies, and black holes” is a free, 4-lesson study at novice, created with soclever, a personal AI teacher. Each lesson takes a few minutes and ends with a check-in question; finish the curriculum and you can take a certificate test to earn a diploma. Starting is free once you sign in — or generate your own study on any topic. Shared by @jay.
What you'll learn
- The Big Bang: Our Universe's Beginning. The universe had a beginning. Not a beginning in the sense of appearing at some location in space—there was no space before it existed, and nothing outside it to appear into. The…
- How Stars Are Born and Die. You've probably heard that stars live forever, burning steadily in the night sky. That's not true—every star has a beginning, a productive middle, and an end, just like you do.…
- Galaxies: Islands of Stars. Without knowing what galaxies are, you can't understand why the universe is so vast or how we fit into it at all. A galaxy is a gravitationally bound system—a collection of…
Questions this study answers
- Why did scientists conclude the Big Bang happened, rather than the universe simply always existing as it is now?
- Why does a star eventually stop shining if gravity is always pulling on it?
- What holds a galaxy together, and why does that matter for understanding the universe's structure?
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