How Many Aliens Are in the Milky Way? Astronomers Turn to Statistics for Answers - Scientific American
Life in the Universe: An Interdisciplinary Seminar Course
Choose Your Own Alien Adventure – The Drake Equation Gets Interactive | Smart News | Smithsonian Magazine
What is the Fermi Paradox? - ExtremeTech
Drake's Brave Guess | Discover Magazine
How many alien civilizations are out there? A new galactic survey holds a clue.
Drake equation: How the alien formula works, what its variables mean - Business Insider
Alien Hunters, Stop Using the Drake Equation | Space
Astronomy Lecture Number 27
At Last, How Many Alien Civilizations are There? - Astrobiology Magazine
The Statistical Drake Equation - ScienceDirect
The Drake Equation
Scientists use this formula, called the Drake equation, to explore the chance we'll make contact with intelligent aliens | Business Insider
The Drake Equation: What Are the Odds That Aliens Exist? | Discover Magazine
The Drake Equation Is Broken; Here's How To Fix It
Detectable civilizations in our galaxy 4 (video) | Khan Academy
Are we alone in the universe? Revisiting the Drake equation – Exoplanet Exploration: Planets Beyond our Solar System
Detectable civilizations in our galaxy 1 (video) | Khan Academy
The Statistical Drake Equation - ScienceDirect
Introduction - The Drake Equation
The search for life beyond Earth - Curious
Alien Hunters, Stop Using the Drake Equation | Space
Drake equation - Wikipedia
What Are the Odds of Alien Contact? - Issue 80: Aliens - Nautilus
