Assertion: meteoroid | /r/HasProperty | observed by the arecibo hpla radar
Facets:
value: in the atmosphere
type: LOCATION
Source sentences:
text: Our results indicate that although the Earth's Apex centered radiant source, which is characterized by high geocentric speeds (∼55 km/s), appears to be ∼33% of the meteoroids in the Solar System at 1 AU, it accounts for ∼60% of the meteors observed by the Arecibo HPLA radar in the atmosphere.