Statements (25)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
hypothetical star
|
| gptkbp:alsoKnownAs |
gptkb:Nemesis
|
| gptkbp:category |
astronomical hypothesis
hypothetical astronomical object |
| gptkbp:distanceFromEarth |
1.5 light-years (hypothetical)
|
| https://www.w3.org/2000/01/rdf-schema#label |
Nemesis star
|
| gptkbp:hypothesizedEffect |
disturb Oort cloud
send comets toward inner Solar System |
| gptkbp:hypothesizedToBe |
white dwarf
companion star to the Sun |
| gptkbp:proposedBy |
gptkb:Richard_A._Muller
gptkb:Marc_Davis gptkb:Piet_Hut gptkb:Jack_G._Hills 1984 |
| gptkbp:purposeOfHypothesis |
explain periodic mass extinctions on Earth
|
| gptkbp:relatedTo |
gptkb:Oort_cloud
Sun mass extinction events comet showers |
| gptkbp:searchStatus |
no evidence found
not detected |
| gptkbp:status |
disfavored by current astronomical surveys
|
| gptkbp:bfsParent |
gptkb:Nemesis_hypothesis
|
| gptkbp:bfsLayer |
6
|