The Earth (地球 Chikyū?) is the third planet from the Sun and the densest and fifth-largest of the eight planets in the Solar System. It is the main setting of Thunder Force V, also playing a key role in Thunder Force VI.
Thunder Force V[]
The fifth chapter of the Thunder Force series take us to the 3rd planet of our Solar System, where the Space Probe Sekika 3 brought an alien starfighter known by mankind as "Vastian's Steel" or "Vasteel" to the Lunar base of the United Earth Goverment, where the best scientists tried their best for learn about Vasteel, but the alien technology was so advance for human knowledge. So, in the year 2139 they built a large island called Babel, controlled by the most powerful Artificial Intelligence known as the Guardian, with the purpose of dwelve into the mysteries of the Vasteel. The success of Babel's work led humanity to a new technological evolution known as Vasteel Technology, every invention of the 22nd century could be traced from Vasteel, from Superconductors to Heavily ar.-- er... Interstellar Starships for space colonization.
The progress didn't last for too long, in 2150 the Guardian declared the first war against Earth and the human race for unknown reasons, over one third of Earth's population perished on the event known as the First Annihilation. In 2151, the Special Flight squadron "Thunder Force" was formed with the purpose of destroying both Babel and the Guardian. The operation succeeded in the total destruction of the Vasteel, Guardian and heavy damages on Babel.
Thunder Force VI[]
In 2161, the ORN Empire somehow learned of Earth and began an invasion on the planet. Despite initially pushing Earth forces back and forcing them to make a stand in the orbit of their home planet, the ORN invasion was ultimately defeated by Earth forces re-augmented at the last minute by restarting the development of Vasteel technology, named "Refined Vasteel Technology", assembling a new Sword Fleet to engage the Volbados Class battleships in orbit, and restarting the RVR program creating the RVR-00 "Phoenix" and the Phoenix Brigandine. In the aftermath of this hard-fought victory, Earth Side forces initiated an operation to link up with the Galaxy Federation and find a way to definitively end the threat of the ORN Empire.
Other appearances[]
Hyper Duel[]
Although the battle begins (and ends) in outer space, the Earth is the main battlefield during the events of Hyper Duel. An evil government tries to take over the world with all the methods possible, including dropping a space colony on the Earth, but the takeover is thwarted by the Buster Gears.
Blast Wind[]
A nuclear shockwave has all but destroyed the entire population of Earth. The remaining humans on the planet were gathered aboard a ship called the Ark by a prophetic man named Noa. After the radiation dissipated, humankind emerged from the Ark and began building thriving civilizations. However, the fledgling civilization came under attack by a culture called Gorn. Gorn was a culture consisting of the embodiment of machines and artificiality. During the nuclear winter, Gorn was sealed beneath the Earth's crust and emerged when the remaining humans came out of the Ark. Humanity must fight back against Gorn, using ancient weapons unearthed by the new civilization and two "Ultimate Destroyers" Hayate and Reppu piloted by Kyo and Forn.
After the events of Blast Wind, it is revealed that the Earth was dying because of the environmental abuses commited by humanity throughout their history. As a result, Noa and his people returned to a simple way of life. During Noa's existence, they found the hability to communicate with the Earth, where they got messages that confirmed the planet's imminent death. In response, Noa's people put their children in suspended animation on a small spaceship. Escorted by Hayate and Reppu, the spaceship begins its long journey into space towards another habitable planet for humanity.