There is no RationalWiki without you. We are a small non-profit with no staff – we are hundreds of volunteers who document pseudoscience and crankery around the world every day. We will never allow ads because we must remain independent. We cannot rely on big donors with corresponding big agendas. We are not the largest website around, but we believe we play an important role in defending truth and objectivity.
If everyone who saw this today donated $5, we would meet our goal for 2019.
| Fighting pseudoscience isn't free.|
We are 100% user-supported! Help and donate $5, $20 or whatever you can today with !
| The poetry of reality|
|We must know. |
We will know.
|A view from the|
shoulders of giants.
SETI (Search for Extra-Terrestrial Intelligence) is a collective term for activities that search for extraterrestrial life, specifically intelligent life, "out there." When people talk about "SETI" as an entity, they usually mean the SETI Institute, a non-profit organization, or conflating other people's efforts with the Institute.
Aliens on my radio
Most signals received and analysed have turned out to have natural explanations, but regardless, the methods employed by the group are scientifically sound and their reported signals are often featured in prominent journals. So even if SETI doesn't find life out there, it has found some very interesting non-life out there.
- The Arecibo message wouldn't be within RationalWiki's mission, but we have an article on the Arecibo answer
- The Drake Equation for guessing probability of intelligent extraterrestrial life.