Assertion: millisecond pulsar | /r/HasProperty | old ∼109yr
Facets:
Source sentences:
text: MILLISECOND radio pulsars, which are old (∼109yr), rapidly rotating neutron stars believed to be spun up by accretion of matter from their stellar companions, are usually found in binary systems with other degenerate stars1.
text: Millisecond pulsars are older pulsars that spin every thousandth of a second.
text: MILLISECOND radio pulsars, which are old (∼109yr), rapidly rotating neutron stars believed to be spun up by accretion of matter from their stellar companions, are usually found in binary systems with other degenerate stars1.