Assertion: asteroid belt | /r/HasProperty | 2.9e21 kg
Facets:
Source sentences:
text: If the planets were the size of Mercury (approx 3.3e23 kg) making a combined mass of 6.6e23 kg and if the best guess of the mass of the asteroid belt (2.9e21 kg) is more-or-less accurate, then 99.5% of the mass is gone, which seems a largish number to me.