Statements (32)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
scientific formula
|
| gptkbp:alsoKnownAs |
gptkb:Drake_equation
|
| gptkbp:category |
extraterrestrial life
equations in astronomy |
| gptkbp:component |
L
N N = R* × fp × ne × fl × fi × fc × L R* fc fi fl fp ne |
| gptkbp:fc |
fraction of civilizations that develop detectable communication
|
| gptkbp:fi |
fraction of life sites where intelligent life evolves
|
| gptkbp:field |
gptkb:astronomy
astrobiology |
| gptkbp:firstPresented |
gptkb:Green_Bank_meeting
|
| gptkbp:fl |
fraction of planets where life actually appears
|
| gptkbp:fp |
fraction of stars with planetary systems
|
| https://www.w3.org/2000/01/rdf-schema#label |
Drake formula
|
| gptkbp:influenced |
SETI research
|
| gptkbp:influencedBy |
gptkb:Fermi_paradox
|
| gptkbp:L |
length of time civilizations release detectable signals
|
| gptkbp:name |
number of civilizations with which humans could communicate
|
| gptkbp:ne |
number of planets per star that could support life
|
| gptkbp:proposedBy |
gptkb:Frank_Drake
|
| gptkbp:purpose |
estimate number of active, communicative extraterrestrial civilizations in the Milky Way
|
| gptkbp:R* |
average rate of star formation in the galaxy
|
| gptkbp:yearProposed |
1961
|
| gptkbp:bfsParent |
gptkb:Drake_equation_(1961)
|
| gptkbp:bfsLayer |
7
|