How do you explain it?

[Aiken]

Back to WP explanations. Possibly it's an alternative universe, and warp points are an inherent part of its physics. And probably traditional (for us) interstellar travel is theoreticaly impossible there.

In perfectly explains why Aaron rejected to implement intersystem movement at speed of light in se5 - he has arrived from that universe recently (his saucer was last seen about 20 years ago) and this kind of movement is a wild nonsense for him.

[zircher]

Gamma rays are a handy mechanism for pushing that huge reset button on all local civilizations. :-)

http://www.jrmooneyham.com/ctctgam.html

You would not even need a total extinction event, just one that returned all the races to the stone age and left a few interesting ruins behind.
--
TAZ

[atari_eric]

Forget about the gamma ray burster threat, worry aobut the bad webpage coloing effect!

Ow, my eyes...

[Ragnarok]

atari_eric said:
Forget about the gamma ray burster threat, worry aobut the bad webpage coloing effect!

Ow, my eyes...

You just had to say that to make me look, didn't you?! I am blinded for the rest of the day now.