California Institute of Technology
Cool Cosmos: Ask an Astronomer
Have you ever wondered if aliens really exist? So do astrobiologists. Their job is to find out if life exists in space. Cool Cosmos and NASA provide the answers to the most frequently asked questions about this topic.
PBS
Pbs: Exploring Space: The Quest for Life
Alien life is often theorized in many ways throughout popular culture. This site by the Public Broadcasting System attempts to shed light on the studies and exploration that are currently underway to uncover such life. This well rounded...
PBS
Nova: Do Aliens Exist in the Milky Way?
Does alien life exist? Explore the arguments both pro and con. Make your own opinion known by participating in an online poll and then find out what the majority believe.
Other
Space Science Institute: Alien Earths: Search for Life
How do you recognize life on another planet? What tests do scientists use to determine if something is a life form when they are many light years away from being able to observe it directly? Try your hand at interactives to create a...
Concord Consortium
Concord Consortium: Stem Resources: Is There Life in Space?
In this investigation, students will explore whether or not there can be life outside of Earth by using planet hunting models to discover how scientists find new planets. They will perform simulated spectroscopic measurements to...
TED Talks
Ted: Ted Ed: Why Can't We See Evidence of Alien Life
Chris Anderson presents an animated exploration of the famous Fermi Paradox and questions why we haven't yet seen apparent signs of alien life. [6:04]
TED Talks
Ted: Ted Ed: Nasa & Trappist 1: A Treasure Trove of Planets Found
Seven Earth-sized planets have been observed by NASA's Spitzer Space Telescope around a tiny, nearby, ultra-cool dwarf star called TRAPPIST-1. Three of these planets are firmly in the habitable zone. In this video, NASA Scientists...
TED Talks
Ted: Ted Ed: The Search for Other Earth Like Planets
Olivier Guyon examines the possibility of finding other planets within astronomical numbers, some potentially rife with life. [6:21]
TED Talks
Ted: Ted Ed: Carl Sagan on the Existence of Extraterrestrials
Carl Sagan discusses the incomprehensible vastness of the universe, the wonder of our own place in it all, and the science behind understanding the likelihood of the existence of extraterrestrial beings. [6:24]
NASA
Nasa: Space Place: I See Ice Viewer
Explore the solar system like never before with this photograph viewer. Choose the planet, then scroll through the many beautiful photographs taken by space missions. Read about how each photo shows evidence of the presence of ice.
NASA
Nasa: Nasa's Carl Sagan Fellows to Study Extraterrestrial Worlds
NASA announces the new Carl Sagan Postdoctoral Fellowships in Exoplanet Exploration, created to inspire the next generation of explorers seeking to learn more about planets, and possibly life, around other stars.
Australian Broadcasting Corporation
Australian Broadcasting Corporation: News in Science: Astronomers Seek Life at End of Rainbow
From ABC News in Science, Marilyn Head's article explores the possibility entertained by several researchers that the key to discovering life beyond Earth (or habitable planets) is in studying rainbows.
PBS
Pbs News Hour Extra: Newly Discovered 'Goldilocks' Planet Has Potential for Life
Probably one of the coolest things to imagine is life on another planet! What would it look like? What could it possibly be? Scientists have discovered a planet much like Earth. "I would say that the chances for life on this planet are...
PBS
Pbs Teachers: Scientific American: Life's Big Questions: Are We Alone?
Create a message (without words) to send into deep-space that will communicate to others what it is like to be a teenage earthling. Exchange messages with other groups to interpret each other's communications.