The existence of terrible weapons of war capable of destroying planets had long been suspected by several of the younger races. Some of the peoples with race memories or historical records of the last Great War speak of them. Markab holy tracts speak of wrath from the heavens that shattered the worlds of the sinful. The Book of G'Quan contains a passage describing a 'Dark Oracle' - obviously either a Shadow itself or, more likely, a Shadow vassal race, possibly a Drakh magus — threatening the doom of the Narn world with black spears from the sky.
There are also several asteroid fields which are believed to be planets destroyed by some catastrophe, although many of these rumours can be discounted. Long-time associate of the Blessed Delenn through his efforts in helping to supply the nascent Kazomi 7, Captain Jack, claimed to have encountered no less than four such destroyed worlds. His claims are usually treated with scepticism, but he was responsible for one of the first sightings of First One ships, early in the year 2262.?
Insofar as any of these stories were believed, it was thought to apply to the Shadows only. The terrifying sight of their Black Cloud rising above Kazomi 7 towards the end of the first phase of the War confirmed the existence of such planet-killing weapons, and no one who saw that battle doubted that the weapon was capable of destroying Kazomi 7.
There were other forces whose powers were more or less acknowledged to be of similar magnitude — The Great Machine, for one. We are indebted to L'Neer of Narn for providing a great deal of information on the capabilities of that artefact, information gleaned from her conversations with Ha'Cormar'ah G'Kar.? And, of course, Cathedral....
But no sign of any equivalent Vorlon weapon was ever positively identified. They refused to answer any questions put to them on the subject. Their level of technology was roughly on a par with the Shadows of course, and of the creators of the Great Machine, so it was virtually certain that they possessed the technology to build such weapons, even if they did not actually have the weapons themselves.
But, others argued, if they had the weapons, or even the technology, why had they not employed them on Z'ha'dum, during the thousand years in which the world was deserted? There was no convincing answer for that.
In the middle of 2263 all the questions were answered, although not in a way that anyone would have wanted. It was the second sign of the end of the peace, and the beginning of the month that would later be called the Death of Hope.
The planet killer revealed itself above Narn, ready to inflict punishment for the Kha'Ri's sheltering of some of the exiled Shadow vassal races. It was felt by the Vorlons that an object lesson was needed.
They considered the use of a planet killer to be a lesson.
? GOLDINGAY, D. G. (2293) Stalkers on the Rim. Chapter 4 of The Rise and Fall
of the United Alliance, the End of the Second Age and the Beginning of the
Third, vol. 3, 2262: The Missing Year. Ed: S. Barringer, G. Boshears, A. E.
Clements, D. G. Goldingay & M. G. Kerr.
? See also Learning at the Prophet's Feet, by L'Neer of Narn.
MATEER, K. (2295) The Second Sign of the Apocalypse. Chapter 9 of The Rise
and Fall of the United Alliance, the End of the Second Age and the
Beginning of the Third, vol. 4, The Dreaming Years. Ed: S. Barringer,
G. Boshears, A. E. Clements, D. G. Goldingay & M. G. Kerr.