Age of Terra

"Time in its irresistible and ceaseless flow carries along on its flood all created things and drowns them in the depths of obscurity."

– Alexiad, Anna Komnene, quoting Sophocles' Ajax

The Age of Terra is NOW! It is the age you, lovely readers all, are currently living in so you too technically are part of the history of the Warhammer 40,000 universe and part of the reason why the galaxy eventually goes down into its deep grimdarkness. Google, Facebook, and all the rest are doing their part to bring us to the next stage, the Dark Age of Technology.

We'll let you absorb that for a moment.

In all seriousness, the Age of Terra is the period in the 40k timeline from year 1 AD to year 15,001 (so a long time). It is the age when humanity moved from primitive origins to a state where they had developed sublight drives and were spreading out from the solar system to colonise the galaxy.

Almost nothing is known by the Imperium of these early times (Jesus is mentioned in the fluff as an 'ancient religious leader' but no details) and barely nothing survives of that period. So the idea of preserving things is obviously heresy (in the Imperium yes as anything that contradicts official records is BURNED!). However that's more of a post-heresy thing. During the great crusade Malcador had a museum of age of Terra artifacts and many of the Horus Heresy books make passing reference to things from that era although in somewhat corrupted form. While Christian (known in 40k as catheric) teachings were definitely actively supressed by Big E (along with every other religion), snippets of plays and philosophy at least survived enough to be referenced in the 30k era. (in Prospero Burns, the remembrancers are confirmed to have 3 of Shakespeare's plays, although such is their misguided approach to information retrieval that they assume the 3 they found must have been all of them).

Considering all that happens, it is perhaps best for everyone reading this to stay in the current time. At least we don't have Chaos Gods to worry about. Yet....

According to Fear To Tread, some kind of apocalyptic shit happened before M7.

Timeline of Warhammer 40,000
The Times of Old Wars of Secession - War in Heaven (60.000.000 BC) - Fall of the Eldar (M30)
Pre-Heresy Age of Terra (M1-M15) - Dark Age of Technology (M15-M25) - Age of Strife (M25-M30)
Great Crusade (M31) The Last Church - Rangdan Xenocides - Interex - Faash - Council of Nikaea
Horus Heresy (M31) Battle of Isstvan III - The Burning of Prospero - Drop Site Massacre - Thramas Crusade
The Battle of Phall - Battle of Calth - Signus Campaign - Imperium Secundus - Siege of Terra
Time of Rebirth (M31-M32) The Great Scouring (M31) - Start of The Long War (M31) - The Legion Wars (M31)
The Battle of Skalathrax (M31) - Creation of the Codex Astartes (M31) - Second Founding (021.M31)
The Forging (M32-M34) The War of The Beast (544.M32-546.M32) - The Beheading (546.M32)
Nova Terra Interregnum (M34-M36) 21st Founding (M36)
Age of Apostasy (M36-37) Plague of Unbelief (310.M36)
Age of Redemption (M37-M38) Abyssal Crusade (321.M37-121.M38)
The Waning (M40-M41) Gothic War (143-151.M41) - The Macharian Crusade (392-399.M41) - The Macharian Heresy (400-470.M41)
Wars for Armageddon (444.M41, 941.M41 and 991.M41) - Damocles Crusade (742.M41)
Time of Ending (M41) The Vaxi Atrocity (731.M41) - First Tyrannic War (745-746.M41) - Sabbat Worlds Crusade (755.M41-780.M41)
Siege of Vraks (813.M41-830.M41) - Massacre at Sanctuary 101 (897.M41) - Badab War (901-912.M41)
The Vaxhallian Genocide (926.M41) - Second Tyrannic War (990.M41-993.M41) - Third Tyrannic War (997.M41-999.M41)
Octarius War (999.M41) - 13th Black Crusade (999.M41-M42)
Age of the Dark Imperium (M42-ongoing) Indomitus Crusade (999.M41-111.M42) - Ultima Founding (M42) - War of Beasts (001.M42-025.M42) - Plague Wars (~111.M42) - Psychic Awakening (M42)