- "This Earth is at the center of the multiverse. It's the access point to every other Earth in existence."
- —Hunter Zolomon, referring to Earth-1[src]
Earth-1 was a universe parallel to a plethora of others, such as Earth-2. The name was coined by Martin Stein. To Earth-2 citizens, or at least that Earth's Harrison Wells, Earth-1 was initially thought of as Earth-2. Also, to Earth-17's citizens, it is known as Terra Prime. Grodd has referred to this universe as First Earth. After a massive exodus during the crisis, it became home to 3 billion refugees from Earth-38 after that universe was destroyed by a wave of antimatter. Shortly after, however, the antimatter wave hit Earth-1 as well, vaporizing its population and destroying the entire multiverse with no Earths remaining. It was also the final Earth to be destroyed.
After Oliver Queen died while battling the Anti-Monitor and reformed the universe, Earth-Prime was formed, which contained most elements of Earth-1, Earth-38, and Earth-TUD5. As such, while this Earth may be physically gone, its people live on as part of Earth-Prime.
Earth-1 was particularly important in that it was a central junction in the original multiverse, being the middle intersection from which one could travel to any other alternate Earth.
After learning of the existence of parallel worlds, Martin Stein coined the world's name, "Earth-1", to describe Team Flash's relative position in regards to all of the other worlds. Beginning in the early 21st century, it has become home to numerous groups of extraordinary protectors, such as the vigilante unit Team Arrow, the scarlet speedster known as the Flash and his team of allies who emerged after the explosion of the S.T.A.R. Labs particle accelerator that gave rise and prominence to superpowered meta-humans, and John Constantine's group of mystical allies. Even in other times, similar such heroes operate, such as the secret mid-20th century alliance the Justice Society of America, and the time-traveling Legends, who are associated with the top-secret organization of the Time Bureau.
Events (in chronological order)
- Big Bang (billions of years ago)
- Cretaceous (69,997,983)
- Pleistocene (768,000–10,000)
- Trojan War (1258–1248)
- Gallic Wars (before 49)
- Caesar's Civil War (49)
- Damien Darhk's assault on Camelot (507)
- Viking exploration of North America/Vinland (1000)
- Al-Fatih founded the League of Assassins (1013)
- The Ninth Circle was founded (between 1301-1400)
- Salem Witch Trials (1692–1693)
- American Revolutionary War (1775–1783)
- American Civil War (1861–1865)
- Belle Époque (1871–1914)
- Launch and destruction of the Titanic (1912)
- World War I (1914–1918)
- Battle of the Somme (1916)
- Launch of the Spirit of St. Louis (1927)
- Spanish Civil War (1936–1939)
- World War II (1939–1945)
- Battle of Saint-Lô (1944)
- Cold War (1947–1991)
- Redmond Dominator Invasion (1951)
- Woodstock (1969)
- Somali Civil War (1991–present)
- Battle of Mogadishu (1993)
- Mallus defeated by the Legends (1992)
- Afghan War (2001–present)
- Hong Kong Alpha-Omega release (2010)
- The Undertaking (2013)
- S.T.A.R. Labs particle accelerator explosion (2013)
- The Siege (2014)
- Star City Alpha-Omega release (2015)
- Genesis (2016)
- Metapocalypse (2016)
- Dominator Invasion (2016)
- Earth-X Nazi Invasion (2017)
- Enlightenment (2018)
- Cicada's war against meta-humans (2018–2019)
- Emiko Adachi and the Ninth Circle's war against Oliver Queen and Star City (2018–2019)
- Mar Novu recruits Oliver and his team as well as Barry and his team for a coming crisis. (2019)
- Ramsey Rosso's reign of terror in Central City (2019)
- Talia al Ghul and Thea Queen founded the League of Heroes (2019)
- Anti-Monitor Crisis (2019)
- Immigration of Earth-38 denizens
- The end of the original multiverse
- The Canaries liberate Star City and The Glades from Eden Corps (2040)
- Second Blitz (2166)
- Thanagarian Invasion (2175)
- Flashpoint (briefly; erased due to Barry's restoration of the timeline)
- Legion of Doom's alternate reality (briefly; erased due to the Legends' intervention)
- Anachronisms (formerly; timeline fixed by the Legends)
- Elseworlds (x2) (briefly; erased due to the loss of the Book of Destiny's powers)
- The original Anti-Monitor Crisis (2024; erased and advanced to 2019 due to time aberration)
- Alex Danvers
- Kara Danvers/Supergirl
- Querl Dox/Brainiac 5
- J'onn J'onzz/Martian Manhunter
- Clark Kent/Superman
- Jonathan Kent
- Lois Lane
- Lex Luthor
- About 3 billion human and alien refugees following the Evacuation of Earth-38
- Barry Allen/The Flash (deceased)
- Kara/Overgirl (deceased)
- "The Ray" (deceased)
- Laurel Lance/Siren-X
- Tommy Merlyn/Prometheus (deceased)
- Oliver/Dark Arrow (deceased)
- Leo Snart
- Mar Novu/The Monitor (deceased)
From an unknown Earth
John Con Noir
DC's Legends of Tomorrow
Chronicles of Cisco
Freedom Fighters: The Ray
Arrow: Season 2.5
The Flash: Season Zero
Arrow: The Dark Archer
The Chronicles of Cisco
- Earth-1 vibrated at a lower frequency than Earth-2 before the universes were destroyed by antimatter.
- Earth-1's vibrational frequency is calibrated at a molecular level. 
- Earth-1, along with Earth-38, was one of the few universes where the multiverse was not public knowledge. As a result, King Shark and Black Siren were mistaken for their Earth-1 counterparts.
- Earth-1 was the last universe to be destroyed during the Anti-Monitor Crisis, and thus was the last universe of the original multiverse to exist.
- Time travel and the Crisis create a contridiction. Unless every time someone went into the future, they slipped into Earth-Prime's timeline.
- Eobard and Nora came from post-Crisis eras.
- The year 3000 was visited by by the Waverider.
- Vandal Savage took over the world in 2166.
- When Barry attempted to go to December 12th 2019, the timeline didn't exist.
- This is likely because in the original timeline, the Crisis occurred in 2024, and it is possible that Earth-Prime never existed in the original Crisis. After the defeat of Cicada in 2019, the timeline changed, and the Crisis occurred earlier. It is possible that due to this, the timeline altered the outcome of the Crisis, as well, which resulted in the Multiverse's destruction and eventual rebirth, so time travel on Earth-1 was no longer possible after said change in the timeline.
|Prime • 2 • 9 • 12 • 19 • 21 • 96|
|1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 • 29 • 30 • 31 • 32 • 33 • 34 • 35 • 37 • 38 • 43 • 47 • 48 • 51 • 52 • 66 • 67 • 73 • 74 • 75 • 76 • 85 • 86 • 87 • 89 • 90 • 92 • 96 • 99 • 167 • 203 • 221 • 260 • 494 • 666 • 719 • 827 • 898 • 1938 • D • F • N52 • X • TUD1 • TUD2 • TUD3 • TUD4 • TUD5 • TUD6 • TUD7 • TUD8 • TUD9 • TUD10 • TUD11 • TUD12 • TUD13 • TUD14 • TUD15 • TUD16 • TUD17 • TUD18 • TUD19 • TUD20 • TUD21|