Assertion: dark matter | /r/HasProperty | detected
Facets:
Source sentences:
text: The way dark matter is detected as we can’t see it, is based on gravity.
text: The principal way dark matter can be detected is by observing its gravitational effect on nearby objects.
text: The AMS findings are being published in Physical Review Letters, but Ting said it would be premature to declare that dark matter has been detected.