It's not quite to scale but it give you an idea. An average hive fleet contain roughly 1.5 billion craft. All of the Tyranid swarms would easily fill up a space the size of a solar system (or at least enough of it to matter) if they all grouped together.
I don't believe any of your numbers until you show some things that say the same. Lexicanum
says: "Hive Fleets are massive locust-like Tyranid swarms, comprising billions of creatures including the actual bio-ships, living spacecraft used to cross interstellar space and the voids between galaxies."
And the WH40K wiki
says (under description): "Tyranid Hive Fleets consist of millions of biomechanical craft, each serving as host to an untold number of symbiotic organisms."
Either way Hive Ships are described
) as "massive". If they are as massive as a Apocalypse-class Battleship
with a lenght of 4km, a width of 2km and an assumed height of 2 km, they would have a volume of 16 km^3. And if we further assume that every single Tyranid bio-ship is a Hive ship with the same proportions, then a Hive fleet with a million Hive Ships with the same proportions as the abovementioned IoM ship would have a volume of 1.6E7 km3
(or 16,000,000 km3
). The City, going by my past figures, has a volume of 1,900,000,000,000,000,000,000,000,000 km3
(19 1.9E27 km3
).118,750,000,000,000,000,000 such Hive Fleets could fit inside the City.
Hence the whole "lost, presumed eaten by locals".
Even if we were to say that all the Hive Fleets were composed entirely out of Hive Ships that were perfect spheres with 100 km diameters, and were million ship fleets they'd have a volume of 523,598.33333 km3
... The City could still hold 3,628,735,767,557,190 Hive Fleets.
And just for the hell of it, say the Hive Fleet was composed of spherical ships with a diameter of 100 km, and was composed of a billion ships each. The City could still hold 3,628,735,767,557.190 Hive Fleets.
The City is frickin' huge.
By extension, I'm only counting the City going up to Jupiter. The Solar System, on the other hand, goes further out. So All the Hive Fleets in WH40K could sit in one Solar System, in one perfect sphere, filling out all of the volume without leaving any gaps of space between then, and the Solar System would not notice them at all.
The Solar System is frickin' huge."Space is big. Really big. You just won't believe how vastly, hugely, mind- bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space." - The Hitchhiker's Guide to the Galaxy
by Douglas Adams