Distant past

==Billions of years ago==
=== More than 10 billion years ago ===
* The universe is formed in one or multiple expansion phases that scientists called "Big Bang(s)". Federation cosmologists still debate in the 24th century on the datation of the universe and the causes of its birth. ()
* The birth of the Universe represents a hideout for members of the Q Continuum. The was briefly transported here by Quinn in order to escape Q, but he too had once used this hideout and was thus able to find the ship. ()
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=== 9 billion years ago ===
* Hundreds of protostars collapsed in close proximity to one another forming the astronomical phenomenon later known as a black cluster. ()
=== 5 billion years ago ===
* The star Sol begins to form out of nebular dust and interstellar gases. () 
* is born. ()
=== 4.5 billion years ago ===
* The Guardian of Forever was asked its last question until 2267. ()
* The Progenitors seeded the oceans of many worlds with DNA codes, directing the evolution of life towards a physical pattern similar to their own. The varieties of lifeforms that carried this seed code to fruition include the Humans, Vulcans, Klingons, and Cardassians, and likely many other humanoid species of the galaxy. ()
=== 4 billion years ago ===
* Q and the female Q begin their romantic involvement around this time. ()
* The planet Pollux IV forms in the Beta Geminorum system. ()
=== 3.5 billion years ago ===
* On Earth, in a region later known as France, amino acids combine to form the first proteins. In an alternate timeline, an anti-time eruption prevents the formation of life, fulfilling Q's verdict for Humanity. ()
=== 2 billion years ago ===
* Civilization on Tagus III exists as of this time. ()
=== 1 billion years ago ===
* The Slaver Empire is the master of all intelligent beings in the Milky Way Galaxy. The Slavers and all of their subjects are exterminated in a massive war which caused all intelligent life to re-evolve. ()
== Millions of years ago ==
=== 400 million years ago ===
* In the Devonian period, Eryops, the last common ancestor of cold-blooded and warm-blooded organisms, lives on Earth. ()
=== 300 million years ago ===
* An alien ship of an insectoid race is invaded by a magnetic organism. Trapped in orbit of Questar M-17, the crew destroys their own ship to prevent it being carried to other worlds. ()
=== 87 million years ago ===
* The D'Arsay civilization launches the archive of their culture. ()
=== 65 million years ago ===
* A mass extinction occurs at the end of the Cretaceous period on Earth when a comet impacts the planet, wiping out the dominant reptile superorder, the dinosaurs, among others. (; )
* According to the Distant Origin Theory, some of Earth's dinosaurs belonging to the hadrosaur genus survive the mass extinction. Although the dominant reptile superorder was almost wiped out, these surviving dinosaurs continue to develop, likely on a secluded, later destroyed landmass. Sometime thereafter, they possibly become one of the first interstellar species in the galaxy when they leave Earth and travel to the Delta Quadrant, laying the foundation for the Voth civilization. ()
=== 50 million years ago ===
* An amphibous lifeform goes extinct. ()
=== 20 million years ago ===
* Now considering themselves a race indigenous to the Delta Quadrant, the recorded history and identity of the Voth dates back to around this time. ()
=== 10 million years ago ===
* The humpback whale evolves on Earth. ()
=== 6 million years ago ===
* The creators of Vexilon ascend to the fifth dimension, but forget to update its operating system in the process. ()
=== 5,997,626 BC ===
*Vexilon's operating system was updated this year. It would not be updated again for another six million and seven years. Vexilon apparently viewed this year as a "good year." This partially had to do with the harvest. ()
=== 1 million years ago ===
* On Earth, the ancestors of Humans begin to distinguish themselves from their primate ancestors by their intelligence and reasoning skills. () 
* Construction of the vast city around the Guardian of Forever, stretching out to the horizon of its' planet. ()
=== Indeterminate ===
* The inhabitants of Organia evolve to beings of pure energy. ()
* The ancient Bajoran civilization begins to flourish. The ancient Bajorans are renowned for their accomplishments in architecture, science, mathematics, philosophy, and the arts. ()
* Pliocene epoch on Earth. ()
== Hundreds of thousands of years ago ==
=== 600,000 years ago ===
* The Tkon Empire collapses. ()
* The humanoid ancestors of Arretans colonize the galaxy. Their colonists may have caused, or influenced, the rise of intelligent life on . ()
=== 500,000 years ago ===
* Arretan civilization is destroyed in a massive civil war when the atmosphere is ripped from Arret. Only a few survivors escape by preserving their consciousnesses in a cave deep below the surface. ()
* The planet Exo III becomes uninhabitable after its sun begins to go dark. The inhabitants resettle beneath the surface and construct androids to serve them. ()
=== 200,000 years ago ===
* The Iconians, a highly developed civilization, are presumed destroyed in an orbital bombardment of their homeworld. (; )
* The large bioplasmic organism, later dubbed the "telepathic pitcher plant", is born in the Delta Quadrant. ()
* The Eightfold Stars, an octonary star system, is created around the planet Aia. ()
=== 100,000 years ago ===
* The subspace network which will be later claimed by the Hirogen is constructed. ()
* The ocean planet, later home of the Monean civilization, is created by extracting all water from a class M planet and containing it inside an immense force field. ()
* In Africa on Earth, the :/Xam Abathwa tribe gathers to share a story about a girl who created the milky way. In one later told version of the story, the girl belonged to a group of primitive farmers afraid of the night, until the girl encounted an alien. (; )
=== Indeterminate ===
* The population of Talos IV is largely wiped out in a war. Forced to live beneath the surface, the Talosians develop their mental powers, while neglecting their technological knowledge and skills. ()
*A -shaped lifeform that died in the mid-23rd century dates back to this era. It records everything it sees and experiences starting around this time as well, including data on countless civilizations. ()
* According to Guinan, the Borg began their evolution into cybernetic beings thousand of centuries before the 2360s. ()
== Tens of thousands of years ago ==
=== 50,000 years ago ===
Circa 48,000 BC
* The Horta of Janus VI begin their latest cycle of rebirth. ()
* Bele begins to chase Lokai, who has led a revolution on the planet of Cheron. ()
=== 45,000 years ago ===
Circa 43,000 BC
* Extraterrestrial visitors, known as the "Sky Spirits", visit a people on Earth who become the indigenous inhabitants of America. ()
=== 30,000 years ago ===
Circa 28,000 BC
* The Verathan civilization, originally from the Verath system in the Gamma Quadrant, reaches its height, spanning two dozen star systems. ()
* An ancient city is built on Bajor with walls and a stone tablet. Trapped inside the tablet are two antagonistic non-corporeal lifeforms, a Pah-wraith and a Prophet. ()
=== 28,000 years ago ===
* On Earth, the Neanderthals become extinct. () 
=== 25,000 years ago ===
Circa 23,000 BC
* The stone tablet city in Bajor is abandoned, sediments bury the ruins, and eventually the ancient city of B'hala is built on top. ()
=== 22,000 years ago ===
Circa 20,000 BC
* The first of at least 947 archaeological expeditions is conducted at the ancient ruins on Tagus III. ()
=== 20,000 years ago ===
Circa 18,000 BC
* The Bajoran Holy City of B'hala is lost to history. ()
* The Bajorans begin celebrating the Bajoran Gratitude Festival. () 
=== 12,000 years ago ===
Circa 10,000 BC
* An artisan known only as the Master of Tarquin Hill on Kurl, during the , creates small ceramic figurines, called naiskos, that embody that culture's belief that within each person is a community of individuals, each with its own desires, views, and voices. ()
=== 10,000 years ago ===
Circa 8,000 BC
* The machine-god Vaal is built on Gamma Trianguli VI. ()
* The civilization on Sigma Draconis VI, by this point at its technological peak, advanced well beyond 23rd century Federation capabilities, experiences a catastrophic glacial age. As a result, the inhabitants of the planet begin to de-evolve to a primitive level, and the male and female inhabitants experience a great schism in their society. ()
* When their sun is about to go nova, the Fabrini leave their system on a propelled asteroid known as Yonada. ()
* A species of intelligent spacefaring organisms which form symbiotic relationships with humanoid lifeforms that live within their bodies becomes nearly extinct. Gomtuu is the last known survivor. ()
* The first of the Orbs is discovered by the Bajorans in the sky above their planet. Over the next ten millennia, a total of nine of these extraordinary objects are discovered, inspiring revelations that shape Bajoran religion. ()
* According to Quinn, this is the last time that "ordinary" Q in the Q Continuum have to speak with each other. ()
* Bajoran archaeologists begin their unsuccessful search for the lost city of B'hala, which is not uncovered until the year 2373. ()
* A path on a Delta Quadrant planet was said to be cut out by unknown spacefarers. The path endured into the 24th century, when it was used by Mikhal Travelers who had an outpost on the planet. ()
=== Indeterminate ===
* The Custodian is built by the Aldean s on the planet Aldea. ()
== Thousands of years ago ==
=== 9,000 years ago ===
;circa 6600 BC : The Zakdorn earn a reputation as brilliant strategists. ()
=== 6,000 years ago ===
;circa 4000 BC: Unknown aliens remove several Humans from Earth to be eugenically bred on a distant planet, lest Humanity destroy itself in its early technological age. Gary Seven, Agent 201 and Agent 347 will be among their descendants. ()
;3834 BC: Akharin is born in Mesopotamia on Earth. A soldier felled in battle, he soon realizes that no injury can kill him. He goes on through many aliases, becoming the immortal known as Flint. ()
;circa 3700 BC: Landru of Beta III preaches peace and coexistence among his people, ending a period of savagery. He creates a powerful computer to guide and protect his people after his death. ()
=== 5,000 years ago ===
;circa 2700 BC: Earth is visited by aliens who settle in the region near Greece and the Mediterranean, where they are worshiped by the Greeks as gods. ()
: Sarpeidon experiences an ice age. Zarabeth is later exiled to this time period, and Spock and Leonard McCoy are briefly stranded here as well. ()
: By this time, Vulcans are still barbaric, war-like and "nearly killing themselves off with their own passions". ()
: A battle warm-up is developed, that according to legend, "makes the heart a friend to the hand." ()
;circa 2500 BC: Vulcans begin to mentally train themselves to suppress their emotions. ()
: Humans develop currency. ()
=== 4,000 years ago ===
;circa 1800 BC: The Xindi-Avians build a concealed fortress on a planet that will one day become the home of the Xindi Council. ()
;circa 1735 BC: According to Spock, this is when Humans begin to glorify organized violence. ()
:Humans on Earth begin the tradition of confining law-breakers to prisons. ()
=== 3,000 – 2,000 years ago ===
;circa 850 BC: The Vulcan monastery on P'Jem is built. () 
;circa 630 BC: The Bajoran prophet Trakor first encounters the Orb of Prophecy and Change, and writes a series of prophecies concerning the Emissary of the Prophets. ()
;circa 525 BC: Aeschylus is born in Greece. ()
;5th to 3rd century BC : Survivors from the Sahndara system supernova arrive on Earth. Their sojourn coincides with the time of the philosophers Socrates and Plato. "After the death of the Greek civilization they idolized" they move on to the planet Platonius. () 
;280 BC: The Lighthouse of Alexandria is built under Ptolemy II. ()
;120 BC: Hipparchus dies. ()
;44 BC: Parmen is born on Platonius. ()
;circa 40s BC: The records data on Kaminar, indicating that a significant portion of Kelpiens have passed Vahar'ai to reach a more evolved state. ()
;32 BC: Philana, future wife of Parmen, is born on Platonius. ()
;3 BC: Philana, now 30, stops aging. ()
=== Indeterminate ===
* Kalandan constructed an artificial planet. During its construction, a deadly disease organism was accidentally created, killing all the outpost's inhabitants. Supply ships servicing the outpost inadvertently transported the disease back to the Kalandan homeworld, which presumably led to the extinction of their species. Before her death, Losira enabled the outpost's automated defenses to protect it until the day when more Kalandans would arrive to secure it. ()
* The people of Megas-Tu leave their dimension in search of companionship which they find initially on Earth. ()
* In the Delos system, the two inhabited planets Ornara and Brekka took different paths, with Ornara becoming technologically sophisticated and Brekka not doing likewise. ()
* The being known as Kevin Uxbridge, a Douwd, begins living in the Milky Way Galaxy. ()
* The Mintakans of the planet Mintaka III abandon their belief in the supernatural. ()
* The Trill begin their life as a joined species. ()
=== Background information ===
Undated Human events
;c. 15th millennium BC
* Parietal wall paintings in Lascaux caves. ()
File:Horse cave painting, time stream.jpg|Cave painting
;Indeterminate
* Myth of Adam and Eve expelled from Garden of Eden. ( ; ; ; )
* Myth of Noah's Ark during the Flood. ()
* Myth of the Tower of Babel. ()
* Myth of Atlantis. ( ; )
;3rd millennium BC
* Construction of Stonehenge in England. ()
* Sumerian myth of Enkidu and King Gilgamesh of Uruk. ()
* circa 2600 BC: The Egyptians build the s of Giza. They are observed by anthropologists from the future (specifically, the year 2769). ( ; ; )
File:Stonehenge, time stream.jpg|Stonehenge
File:Pyramids, time stream.jpg|Pyramids of Giza
;2nd millennium BC
* Emergence of the Mayan civilisation. ()
* c.1810 BC – c.1750 BC : Life and death of the Babylonian king Hammurabi. ()
* c.1755 BC – c.1750 BC : Code of Hammurabi is established. ()
* Emergence of Hinduism. ( ; ; )
* Emergence of Judaism. ( ; ; )
* c.1500 BC – 400 BC (1) : Olmec civilization thrived in the region of Mexico. ()
* c.1303 BC – c.1213 BC : Life and death of the Egyptian king Ramses II. ()
* c.1302 BC – c.1255 BC : Life and death of the Egyptian queen Nefertari. ()
* According to several religious texts, Moses led the Jews out of slavery, and received the Tablets of the Law from 'God'. The immortal Flint claimed to have personally met Moses. ( ; )
* Myth of the Trojan War: after the kidnapping of Helen of Sparta, a Greek expedition was raised to besiege the city. Greek forces included Agamemnon, , Odysseus, and Ajax; Trojan forces included Priam and Hector. ( ; ; ; )
* According to several religious texts, confronted the giant Goliath. ( ; )
File:Egyptian wall painting, time stream.jpg|Egyptian wall painting depicting leading Nefertari in the afterlife
File:Moses.jpg|Moses Showing the Tables of the Law to the People
;1st millennium BC
* c.990 BC – c.931 BC : Life and death of the Israelite King Solomon. Flint claimed it was one of his previous aliases. ()
* c.753 BC : According to Roman legends, Romulus and Remus founded Rome. ()
* 8th century BC : Presumed life and death of the Greek author Homer. ()
* According to several religious texts, Jonah was swallowed by a whale. ()
* 776 BC : First Olympic Games. ( ; ; )
* 7th century BC : First Homeric Hymns were written. ()
* c.550 BC : Construction of the Temple of Artemis of Ephesus. ()
* c.540 BC – 480 BC : Life and death of the Spartan king Leonidas. ()
* c.544 BC – c.496 BC : Life and death of the Chinese general and philosopher Sun Tzu, author of "The Art of War". ( ; ; )
* According to several religious texts, Daniel was once thrown into a lion's den for refusing to worship a Persian king as a god. ()
* 5th century BC (1) : Buddha founds the nontheistic religion of Buddhism in Asia. ( ; ; )
* c.496 BC – c.405 BC : Life and death of the Greek writer Sophocles, author of "Oedipus Rex". ( ; )
* c.495 BC – 429 BC : Life and death of the Greek statesman Pericles. ()
* 490 BC : Battle of Marathon in Greece. ()
* 480 BC : Battle of Thermopylae between Spartans and the Persians. ()
* 469 BC – 399 BC (1) : Life and death of the Greek philosopher Socrates. The immortal Flint claimed to have personally met Socrates. ( ; ; ; )
* c.460 BC – c.370 BC : Life and death of the Greek physician Hippocrates, presumed author of the Hippocratic Oath. ( ; ; ; )
* c.428 BC – c.348 BC (1) : Life and death of the Greek philosopher Plato. ( ; )
* c.412 BC – 323 BC : Life and death of the Greek philosopher Diogenes of Sinope. ()
* 4th century BC : Life and death of the Greek sculptor Praxiteles. ()
* 6th/4th century BC : Life and death of the Chinese philosopher Lao Tze. ()
* 384 BC – 322 BC : Life and death of the Greek philosopher and scientist Aristotle. ()
* 356 BC – 323 BC : Life and death of the Macedonian conqueror Alexander the Great. Flint claimed it was one of his previous aliases. ()
* c.350 BC : Construction of the Mausoleum of Halicarnassus. ()
* c.309 BC – 246 BC : Life and death of the Egyptian king Ptolemy II. ()
* c.292 BC : Construction of the Colossus of Rhodes. ()
* c.288 BC : Construction of the Library of Alexandria. ()
* 259 BC – 210 BC : Life and death of the first Chinese emperor Qin Shi Huang. ()
* 247 BC – c.182 BC : Life and death of the Carthaginian general and statesman Hannibal. ()
* 220 BC – 206 BC : Great Wall of China is formed when the first Qin emperor connected the walls built by a previous dynasty to prevent an invasion by nomads to the north. ()
* 106 BC – 43 BC (1) : Life and death of the Roman statesman Cicero. ()
* 100 BC – 44 BC : Life and death of the Roman general and statesman Julius Caesar. ( ; ; )
* 85 BC – 42 BC : Life and death of the Roman politician Marcus Junius Brutus. ()
* c.84 BC – c.54 BC : Life and death of the Roman writer Catullus. The energy being Onaya unlocked his potential. ()
* 70 BC – 19 BC : Life and death of the Roman writer Virgil. ( ; )
* 69 BC – 30 BC : Life and death of the Egyptian queen Cleopatra VII. ()
* 63 BC – 14 AD : Life and death of the Roman emperor Augustus Caesar. ()
* c.59 BC – c.17 AD : Life and death of the Roman writer Titus Livius. ()
* Life and death of the Jewish preacher John the Baptist according to several religious texts. ()
* Life and death of the Jewish preacher Jesus Christ according to several religious texts. ( ; ; ; ; ; )
File:Capitoline Wolf, time stream.jpg|Capitoline Wolf suckling the infant Romulus and Remus
File:Fajos Buddha statue.jpg|Buddha statue
File:Pericles shield.jpg|Pericles' shield
File:Greek cures.jpg|Scroll of Greek cures, penned by Hippocrates
File:Praxiteles sculpture.jpg|Sculpture by Praxiteles
== Indeterminate past (overall) ==
* Lactrans attain a level of development that would not be met in terms of Human development until the late 23rd century. ()
* Eons ago the Changelings are Solids before they evolve into a liquid-based, shapeshifting species. ()
* An unknown race, possibly of extragalactic origin, builds a massive planet killer. ()
* According to Klingon mythology, Kortar, the first Klingon, destroys the gods who created him. (; )
* A neutron star in a binary star system in the Kavis Alpha sector begins exploding every 196 years. ()
* A power struggle occurs within the highest ranks of a race called the Saltah'na, which ultimately destroys them. Before their extinction, the Saltah'na create a collection of energy spheres which preserve a record of the events leading to the species' destruction via a telepathic matrix, which can be transferred into the minds of some humanoid species, causing them to reenact the power struggle. ()
* A scientist named Lazarus discovers the alternative warp, constructing a space-time vehicle which can transverse the corridor between two universes over both time and space. He begins his relentless pursuit of his nemesis "the thing" across centuries of time, who is in fact Lazarus's own from the alternate universe. ()
* According to Cosimo in an alternate 2372, Harry Kim could have been sent to before the formation of sentient life on Earth by the time stream, had his attempt to restore history failed. ()
* Eminiar's direct channel to the Vendikar High Council is used for the last time for centuries, until 2267, according to Anan 7. ()
== External links ==
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