The video resource "Cycles in the Sky: Crash Course Astronomy #3" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The video resource "Dark Energy, Cosmology part 2: Crash Course Astronomy #43" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The video resource "Dark Matter: Crash Course Astronomy #41" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
There are cosmic snipers firing at random into the unvierse. What are they and what happens if they hit us? The video "Death From Space -Gamma-Ray Bursts Explained" is a resource included in the Space sciences topic made available from the Kurzgesagt open educational resource series.
The video resource "The Deep Future: Crash Course Big History #10" is included in the "Big History" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The video resource "Deep Time: Crash Course Astronomy #45" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
A framework for thinking about how many detectable civilizations are out there.
Why do we even care about the Drake Equation. Thinking about the fraction of a planet's life when a civilization might be detectable.
Reconciling with the traditional Drake Equation
Taking a shot at estimating the number of detectable civilizations
More reasons why we haven't detected anything yet.
The Paleolithic and Neolithic eras of the Stone Age.
The video resource "Distances: Crash Course Astronomy #25" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
Douglas College Custom Edition for Astronomy 1105. Based on Open Stax Astronomy.
The video resource "The Earth: Crash Course Astronomy #11" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
How the Earth is a the byproduct of a local supernova
The video resource "Eclipses: Crash Course Astronomy #5" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
Einstein's Messengers is an award-winning, 20-minute documentary on LIGO, NSF's Laser Interferometer Gravitational Wave Observatory. The video examines how LIGO is spearheading the new field of gravitational wave astronomy and opening a whole new window on the universe. It explains how LIGO's exquisitely sensitive instruments may ultimately take us farther back in time than we've ever been, catching, perhaps, the first murmurs of the universe in formation. Above all, Einstein's Messengers is a compelling, thought-provoking production about the drama of the scientific quest.
Space travel is the most exciting adventure for humanity, but in an irony of history we may stop ourselves from going into space the more we do it. With every rocket launched we are creating a deadly trap for mankind. The video "End of Space - Creating a Prison for Humanity" is a resource included in the Space sciences topic made available from the Kurzgesagt open educational resource series.
Thinking about energy consumption for tilling land