"From this distant vantage point, the Earth might not seem of particular interest. But for us, it's different. Consider again that dot. That's here, that's home, that's us."
- Carl Sagan, Pale Blue Dot: A Vision of the Human Future in Space
And as I surveyed them from this point, all the other heavenly bodies appeared to be glorious and wonderful,—now the stars were such as we have never seen from this earth; and such was the magnitude of them all as we have never dreamed; and the least of them all was that planet, which farthest from the heavenly sphere and nearest to our earth, was shining with borrowed light, but the spheres of the stars easily surpassed the earth in magnitude—already the earth itself appeared to me so small, that it grieved me to think of our empire, with which we cover but a point, as it were, of its surface.
- Scipio Aemilianus, De re publica: Somnium Sciponis
Terra is Humanity's homeworld. Most likely the planet on which you currently reside. Also the most lazily named planet other than our moon (Called the moon) in the Solar system as well as also being inaccurate since most of the surface is water, might as well call it planet water.
If you want to know it looks like, imagine our current Earth. Now imagine that every single centimeter of soil (including the oceans) has been covered in buildings. Then nuked. Then built again. Then nuked again. Then rebuilt again, with every new city sitting on the ruins of its predecessors. Repeat the process a few dozen times, burn away the ocean, remove half the oxygen, then add solid gold gothic architecture everywhere for the last layer of cities. Here you go. Terra.
Mostly Harmless (if you're a human). Just kidding, it's one of the most dangerous Imperial planets in the galaxy. Untold billions of pilgrims arrive all the time, many of whom die of old age before they even get their entry visas processed, and are spectacularly lucky if they even anywhere near the borders of the furthest edge of the Imperial Palace. It's so polluted that the standard skin-tone on Terra is grey (not pale, not dull white), grey like clay. The Inquisition and the Arbites have their work so cut out that each district has it's own Arbites branch and an Inquisitorial branch every ten, and the noble classes are so full of political scheming and intrigue that you could argue Tzeentch has more stock in Terra than Sortiarius. It all comes as a shock to visitors, including Inquisitorial officials, Ecclesiarchy Priests, and even Astartes that Terra is such a fucking mess, kind of like how some Japanese tourists apocryphally get culture-shock in Paris when it doesn't resemble what they thought it would be like.
In the grim darkness of the far future, Earth is known only as Terra or Holy Terra. It is still the homeworld of humanity and the capital of the Imperium of Man, and location of the Golden Throne and the God-Emperor of Mankind. Pretty much the best place to be, unless you're some sort of heretic that doesn't like gold-plated slums that still have scars from the Horus Heresy. But it is really Holy (no word on the real-life Holy Land between the Jordan River and the Mediterranean Sea though).
The single thrill of excitement the planet got was when Horus turned up in orbit. But instead of bringing potato salad for the annual family bbq, he brought a lot of PAIN and daddy issues to work out and promptly invaded the world in an attempt to end the Heresy one way or the other. Of course the game won't be what it is if he had just won there and then, so the Big E offed him and evaporated his soul right after sustaining near-mortal wounds.
There is so much awesome shit on Holy Terra that most of the planet is practically a cross between a museum and an amusement park. Of course, grimdark means the lines are so long they're measured not in hours but in generations and by the time you would have reached the front of the queue the whole purpose of visiting might have completely been forgotten.
However, one downside of Terra (That Games Workshop likes to conveniently forget) is its depletion of its oceans. You see, Terra kind of needs its oceans in order to make its tectonic plates to move and to trap any greenhouse gases emitted from the magma being erupted from the mantle. Without the ocean, how the hell does Terra's tectonic plates move efficiently without causing the entire planet to have a run-away greenhouse effect like that on Venus? Furthermore, what happens to the cities that sits upon to adjacent plates that are about to intersect each other? The only logical conclusion is that the Imperium somehow stopped the core of Terra from moving, but stopping the core would essentially eliminate Terra's magnetic field which will eventually strip Terra's atmosphere away as well as super cooling its mantle which is a great no no. So Terra's fucked either way unless the Imperium somehow magically stop Terra's mantle from moving while keeping its core and mantle active, or unless we assume the Imperium installed some of their atmosphere controllers to keep the planet breathable.
Currently the Tyranid hive fleets are en route to Terra, drawn to the Emperor and his psychic lighthouse. Like Horus, they will not be bringing a fruit basket to visit, though they are expecting one hell of feast when they arrive. Some time after Roboute Guilliman arrived at Terra, Khorne sent 88 cohorts of his daemon to attack Terra from the warp storm which appeared right above the planet. However, the daemons were defeated, and Khorne was so mad that his eight Bloodthirsters were obliterated by the flame of his RAGE.
The location of:
- The Golden Throne
- Astronomicon HQ, the former Mount Everest
- Enough bling to make Fort Knox look destitute
- Ptera Squirrels (which are vicious and evil creatures)
- Stonehenge ('tis a magic place, where the moon doth rise with a dragon's face)
- A palace the size of Eurasia, centered around the Himalayas
- Various palaces/domains/realms of dignitaries who pay a fortune per minute just to rent a bit of Terra's holy soil
- Super Secret OMG-Don't-Tell-Anyone Inquisition HQ
- The high temple of assassins (somewhere)
- All the Custodes
|The Planets, Systems, Regions and Sectors of the Galaxy|
|Imperial Homeworlds:||Holy Terra - Mars|
|Primarch Homeworlds:|| Baal - Barbarus - Caliban - Chemos - Chogoris - Colchis |
Cthonia - Deliverance - Fenris - Inwit - Medusa - Nostramo
Nocturne - Nuceria - Olympia - Prospero - Ultramar
|Planets:|| Armageddon - Cadia - Catachan - Krieg - Kronus |
Sacris - Scelus - Taelus - Vraks - Zayth
|Systems and Regions:||Jericho Reach - Kaurava System|
|Types of Worlds:||Agri-World - Death World - Forge World - Hive World|