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The Nekrit Expanse is desribed as an extensive, not surveyed,
instable region of space which is full of interstellar dust clouds and
plasma storms, but contains only few planets. The expanse has a width of
several thousand light years, but seems to be not very deep since Voyager
can cross the region in relatively short time. Consequently, Voyager was
definitely inside the Nekrit Expanse between stardate 50443 and 50654 -
what results in a total time of 211 stardate units or 77 days.Using the
maximum cruising speed of Voyager - warp 8, we get a depth of 216.017 ly
for the Nekrit Expanse, a figure, that is plausible in view of the
large width and the ignorance of the people in the regions explored by
the USS Voyager about the space behind the expanse.
The Mutara class nebula
In late 2374, on stardate 51929.3, the USS Voyager reaches a vast
Mutara class nebula, whose borders are beyond the sensor range. Therefore
Voyager can't fly around and also cannot simply travel through due to dangerous
radioactivity within the nebula. In the astrometric lab, Captain Janeway
and Seven consider the remaining possibilities by scanning the spatial
size and shape of the nebula with the more advanced astrometric sensors.
The expansion of the nebula is said to be at least 110 ly, perhaps even
more. It would take Voyager a month to travel through and more than one
year to fly around. Due to the sub-nucleonic radiation, the crew has to
stay unconsciously in stasis chambers during the travel through the nebula
and assign command to Seven.
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Twisted Space
Encountered by Voyager in 2371, the region of twisted space initially
caused various minor systems failures on board the ship, most notably in
the communications system. The ships layout had changed radically. Worse,
the layout was continuing to change on a second by second basis, without
the crew being at all aware of the changes.
Captain Janeway and Ensign Kim encountered some form of field
which appeared to be distorting space itself. Janeways arm became enveloped
in the field and although Kim was able to free her, the after-effects resulted
in severe delirium.
The distortion enveloped the entire ship then vanished of its own accord,
leaving Voyager and her crew completely undamaged. After the distortion
had ended, Voyagers crew discovered that 20 million gigaquads of new information
had been downloaded into the ships computer systems.
Even now it is unclear exactly what the nature of the distortion effect
was. It may have been caused by a vessel occupying multidimensional space,
or indeed may have been a vessel of some form in itself. It is even possible
that the field was a life form in its own right.
Vardwuar Corridors
The underspace corridor network surrounding the Vaadwuar homeworld
is a natural phenomenon which allows ships to travel at far greater than
normal speeds. The corridors were formerly controlled by the Vaadwuar themselves,
who spent centuries mapping them and used them to allow trade with many
other species and for military expansion of their territory. Approximately
1400 years ago the Vaadwuar were defeated by an alliance composed of their
various victim species including the Turei. The alliance subsequently claimed
control of the corridor network. In 2376 Voyager was caught up in the network.
Voyager found that the corridor had allowed them to cross two hundred light
years of space in under five minutes, an average speed of over twenty million
times the speed of light.
Neutronic Wavefront
A neutronic wavefront is a phenomenon which is produced when two
neutron stars collide. The collision forms a ring structure which
expands outwards at a significant fraction of the speed of light.
In 2376 USS Voyager encountered a class nine neutronic wavefront which
was expanding at 200,000 kilometres per second, approximately 66% of light
speed. The phenomena extended for 3.6 light years, indicating that the
collision had taken place several years previously. The ship experienced
energies of well over 90 million terajoules of neutron radiation.