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SciShow
Can an Equation Really Tell Us How Many Aliens Exist?
In 1961, the astronomer Frank Drake wrote down what is now known as the Drake Equation. It's so important to the culture surrounding the search for extraterrestrial life that scientists have carved it into the upcoming Europa Clipper...
Be Smart
Is This Why We Haven’t Found Alien Civilizations? | STELLAR
Looking up at the stars makes you wonder: what and who is out there? And why haven’t we seen any other intelligent civilizations given the vast size and age of the universe? They’re complicated questions and although we haven’t met any...
TED-Ed
TED-Ed: Calculating the odds of intelligent alien life - Jill Tarter
Could there be intelligent life on other planets? This question has piqued imagination and curiosity for decades. Explore the answer with the Drake Equation -- a mathematical formula that calculates the possibility of undiscovered life.
SciShow
Will We Ever Find Intelligent Alien Life?
What can an equation tell us about whether or not we're alone in the universe?
SciShow
Could E.T. Really Find Us? | Compilation
Being the only observable intelligent life in the universe gets lonely sometimes, so it's no wonder we're trying to find something out there to phone home about.
Curated Video
Are We Alone in the Universe? Exploring the Fermi Paradox and Drake Equation
Do Aliens exist? Are we alone in the universe? Where is everyone? Fermi Paradox and Drake Equation: Where is everyone? You probably already know that there are more stars in the universe than all the...
Science ABC
Fermi Paradox Explained: If There Are TRILLIONS of Planets in Space, Why Hasn’t Anyone Contacted Us?
The Fermi Paradox refers to the apparent contradiction between the high probability of extraterrestrial life in the universe and the lack of evidence or contact with such civilizations. Named after physicist Enrico Fermi, the paradox...
Curated Video
The Statistics of Extraterrestrial Life
Astronomer Jill Tarter, Director of the Search for Extraterrestrial Intelligence Institute, discusses Frank Drake's famous attempt to evaluate the likelihood of extraterrestrial life.
Curated Video
Frank Drake's Agenda
SETI Institute astronomer Jill Tarter describes the thinking behind the famous Drake Equation, characterizing key aspects of our ignorance of the existence of alien civilizations
Curated Video
The hunt for oceans in space
Scientists believe there are oceans buried under thick crusts of ice on the moons of Saturn and Jupiter. Sampling them would raise hope of life beyond Earth
NASA
Gravity Assist: If They Call, Will We Listen? The Search for Technosignatures
Jason Wright, professor of astronomy and astrophysics at Penn State, has been thinking about the different technosignatures we could pick up using the telescopes we already have, and the telescopes that we could develop in the future.
NASA
Gravity Assist: The History of the Future, with Steven Dick
Astronomer and historian Steven Dick tells us there are many approaches to consider and many questions we should ask ourselves to get ready, in case extraterrestrial life is found.
Dom Burgess
Why Aliens Will Probably Be Robots.
Is there other life out there in the universe? Do aliens really exist? If so, then where are they all?! In this most epic of episodes, Dom has his favourite film (Aliens) interrupted by an extraterrestrial visitor - how very...
Professor Dave Explains
Astrobiology: The Search for Extraterrestrial Life
How many movies have you seen about aliens? Are any of them realistic? Does intelligent life exist elsewhere in the universe or are we totally alone? Both options are rather terrifying, frankly. But there are scientists that spend their...
Curated Video
The Search For Life Beyond Earth
For as long as we’ve been gazing up at the stars we’ve wondered whether someone out there may be gazing back.
Khan Academy
Detectable Civilizations in our Galaxy 4
Mr. Khan works through the equations that he derived in previous videos. In this fourth video of in a series of five, he uses an equation that he created himself.
Khan Academy
Detectable Civilizations in our Galaxy 2
The idea of whether or not communication from other planets can be transmitted and received is discussed in this presentation. The various issues, such as relative stages of development, the ability to receive a transmission, and whether...
Khan Academy
Detectable Civilizations in our Galaxy 1
Sal outlines a framework for detecting possible civilizations in our universe. He considers the number of stars and uses the requirements for civilizations to derive the number of potentially suitable planets. The Drake equation can help...
PBS
Pbs Nova: Nova Science Now: Leeches, the Search for Et, Stem Cells Breakthrough
Watch this video to learn PBS NOVA: how scientists calculate the probability of intelligent life forms on other planets. Listen to experts' opinions on this topic and learn what scientists are doing to search for extraterrestrials. [51:58]
Khan Academy
Khan Academy: Life in the Universe: Detectable Civilizations in Our Galaxy 2
Why do we even care about the Drake Equation. Thinking about the fraction of a planet's life when a civilization might be detectable.
Khan Academy
Khan Academy: Life in the Universe: Detectable Civilizations in Our Galaxy 3
Reconciling with the traditional Drake Equation
Khan Academy
Khan Academy: Life in the Universe: Detectable Civilizations in Our Galaxy 1
In this video understand a framework for thinking about how many detectable civilizations are out there in the universe. The video derives an equation similar to the Drake equation. [13:03]