Because with the radiation signatures in random flux, you won't have time to get a lock on it!

The grassy metropolis-and the radiation signature, that trace of technology-had drawn her here, just like himself.

It was the radiation signature of a focused linear graviton beam.

The Gorn have probably sent out automated surface trackers to home in on your warp core's radiation signature.

The radiation signature of the beacon indicates that it is not one of ours.

"The idiots probably thought that would hide the radiation signatures from the plutonium and tritium."

The radiation signature of uranium was there, however.

The CMB was, in essence, the radiation signature of the early, expanding universe.

Even against the blinding glare of the manifold, they could now see that the prime's characteristic radiation signature was greatly reduced.

"I'm picking up radiation signatures from below."