20,000,000,000? B.C.
The Big Bang forms the universe, theoretically triggered by the Omega
Molecule. The philosopher Q (Quinn) briefly takes the "Voyager" back to
the universe's birth, from 2372, to elude Q. Q claims that he also hid
here from the Q Continuum once. Three minutes after creation, the
universe consists of a 3:1 hydrogen-helium ratio in a super-hot medium.
In the 23rd Century, the "Enterprise" will encounter duplicate conditions
in the Beta Castellini system (Sector 79F) resulting from an emerging
mini-universe. In 2068, Herbert Samuelson will discover positive proof
for the universe being "pulsating" in that after the Big Bang the universe
will expand, fall back into a 'cosmic egg,' then expand again with a new
Big Bang. The growing-dying-growing cycle will be an old Alpha Centaurian
worldview [V 205, V 189, V 131, TOS #41, SFC].

The Eye of Talek black hole is formed [TDW #1].

10,000,000,000 B.C.
The sun of the Krett homeworld in the Delta Quadrant is formed [GN 25].

9,000,000,000 B.C.
The Black Cluster is formed in Sector 97 when protostars collapse in
close proximity--eventually one of the most ancient formations in the
galaxy [TNG 211]

The planet Alcawell is also formed about this time in the Delta Quadrant
[V #2].

The Nagha, an immense super computer, is constructed by an unknown
organic race. Millions of years later it will evolve into a thinking
intelligence, enslave its own creators, and exterminate them [ON 6].

8,000,000,000 B.C.
Alta Vista's planetary-accretion disk forms [GN 26].

7,500,000,000 B.C.
The extremely advanced civilization living on UFC 522-IV vanishes in-
explicably. Their cities' structures and psionic crystals will remain
perfectly preserved for over 7.5 billion years. When discovered cira 2172
A.D. it will be the remains of the oldest civilization ever found in the
galaxy [SFC].

7,000,000,000 B.C.
The planet Janus VI is formed, the homeworld of the silicon-based Horta
[TNG #50].

6,000,000,000 B.C.
The oldest structures on the Time Planet are constructed, including
the Guardian of Forever [GN 18, CEF, TNG #47].

5,232,113,390 B.C.
The planet Kazh (Klingonki Kazara II) is formed [FRS].

5,000,000,000 B.C.
The Uri Taug system is formed. It will be destroyed in 2262 [TOS #79].

Q, newly born, creates an energy ribbon while playing inside a star.
Imbuing it with his own extraordinary energies, Q's energy ribbon might
be later known as the Nexus temporal energy ribbon. Q's childhood will
later be interrupted when the Continuum scolds him for playing with
antimatter at so young an age. He is disciplined by being required to
spend the next 10 million cycles in solitary meditation. When Q takes
Picard on a tour of his childhood from 2374, they witness it [TNG #47].

4,990,000,000 B.C.
Young Q's period of solitary meditation is completed [TNG #47].

4,200,000,000 B.C.
In the Delta Quadrant, the star Veruna is formed [V #6].

4,040,000,000 B.C.
Captain Picard's message probe from c. 2370 emerges from a wormhole in
this era [SNW II].

4,025,000,000 B.C.
The Picard message probe becomes buried on an un-named world where it
will remain hidden for at least 25 million years [SNW II].

4,000,000,000 B.C.
The first of the humanoid races seeds worlds throughout the galaxy
with humanoid genetic code. An advanced computer algorithm message is
imbedded within the DNA and scattered in pieces throughout at least 19
planets. They might be the Imotru, or possibly their descendants will
be [TNG 246, TNG #47].

A genetically-coded holomessage of thanks from Captain Jean-Luc Picard
(c. 2370) is decoded and viewed by this first humanoid race [SNW II].

Tectonic activity begins on Vulcan (40 Eridani A) with continental plates
moving apart at major fault lines at the rate of several centimeters per
year. It is one of the most geologically active environments [EOM,
TOS #68].

Pollux IV is formed [WM].

Fragments from a comet on the fringe of Krenim space in the Delta Quadrant
impacts a planet. Hydrocarbons will give rise to plant life which in
turn will sustain more complex organisms and ultimately several space-
faring civilizations will evolve to colonize the entire sector. By 2374
(at least in one timeline) 8,000 civilizations will inhabit the sector
[V 177].

3,500,000,000 B.C.
Life begins on Earth (Sol III). In an alternate timeline, an anti-time
anomaly orginating from the late 24th Century wipes out life on Earth
before it can begin. Captain Picard and Q witness the phenomena from
France as it fills an entire quadrant of the galaxy [TNG 278].

A Preserver artifact is created. In 2366 it will be recovered by the
"Enterprise" as an imbedded object within a false Borg decoy planted by
Romulan pawns to release Colonel Thorsen's personality matrix into the
"Enterprise's" computer [GN 18].

3,000,000,000 B.C.
An advanced (extragalactic?) race creates a series of planet-killers:
automated "doomsday machine" robot weapons of immense size and power
to combat the Borg. The collective consciousness of "the Many" are
transcribed into the final such machine. Some will later speculate that
they were constructed by the Preservers. Two starship "Enterprises" will
encounter these planet-killers in the 23rd and 24th Centuries respect-
ively. The exact origin of these weapons is debatable, either just beyond
the Energy Barrier or as far as the Andromeda galaxy [DMa, ST 3, GN 8,
V #5].

Ay-nab, the "god" of Lyra, instructs its people to create a Dyson sphere
world [ON 9].

Davonia, a moon in the Davon system on the rim of Cardassian space, is
formed [DSN #11].

2,000,000,000 B.C.
The Tagus III civilization flourishes. By the 23rd Century it will be
long extinct and an acheological interest. In 2374, Q will take Picard
back to this period on a tour of his younger days to witness the
fabled Sky Divers of Tagus III. A barbaric ceremony enjoyed by young Q
(at times with his young female Q date), he will view the spectacle every
year for a millennia until their extinction. The ancient Taguans call
themselves the Imotru and bear a distinct resemblance to the unnamed
humanoid genetic code seeding beings of some 2 billion years earlier,
suggesting a common evolutionary link [TNG #194, TNG #47].