Zettametre

Holonyms: yottametre < ronnametre < quettametre

Meronyms: picometre < nanometre < micrometre < millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre < exametre

The largest known galaxy, at the centre of the Abell 2029 cluster in Virgo, has a diameter of around 53 zettametres.

As one of my reviewers (SP Gray) puts it: '...I think that Andromeda will be a good deal closer to the Solar System than it is now, before we read of its distance in zettametres'

How many kiloparsecs are there in a zettametre (10²¹ m)?