Warning: This article contains spoilers for X-Men #1, by Jonathan Hickman, Leinil Francis Yu, Gerry Alanguilan, Sunny Gho, VC's Clayton Cowles and Tom Muller, on sale now.
The X-Men spend a lot of time in space. While the far reaches of the Marvel Universe are a convenient place to get away from a world that hates and fears them, the X-Men have still faced off against plenty of intergalactic threats.
Despite the looming presence of the Phalanx and the Brood to the fickle whims of the Shi'ar Empire and the unpredictable nature of the Phoenix Force, several of Marvel's most famous X-Men have made space their new home. After the numerous revelations of House of X and Powers of X, the X-Men are in a period of expansion. With a newly-established mutant homeland on the island-nation Krakoa, the X-Men are setting down roots for the first time in years.
In X-Men #1, Cyclops, Wolverine, Jean Grey and several other mutants are living at Summer House, a newly-established lunar compound near the Blue Area of the Moon, one of the most important places in the X-Men's history.
In the wake of House of X's hard-won battle against Orchis, this issue finds the X-Men in an uncommon moment of peace. As Cyclops and his father, the intergalactic pirate Corsair, have a heart-to-heart talk on the Moon, this issue establishes which X-Men are living at the Summer House as they prepare for a cook-out with Corsair's team, the Starjammers.
With the notable exception of Logan, everyone who's currently living at the Summer House is a member of Cyclops' immediate family. Jean, Cyclops' wife, is seemingly helping raise a younger version of Cable, Cyclops' time-traveling son -- again. Both of Cyclops' brothers, the X-Men's Havok and the reformed cosmic tyrant Vulcan, live at the Summer House, and Prestige, Jean and Scott's daughter from another reality, also lives at the lunar base.
While Krakoa's portals give the Summer House instant access back to Earth, its orbital position still makes it a point of key strategic importance for the X-Men. The Summer House's proximity to the Blue Area of the Moon also carries an equally important symbolic meaning.
The Blue Area of the Moon was created by Stan Lee and Jack Kirby in 1963's Fantastic Four #13. With its Earth-like atmosphere, it was the home of the late Uatu the Watcher. For a time, the Blue Area of the Moon was also a home for the Inhumans, which adds a degree of insult to the X-Men's establishment of a new base there.
More importantly, the Blue Area of the Moon is also the site some of the most famous moments in X-Men history, including the last stand of the Phoenix.
At the end of Chris Claremont and John Byrne's "Dark Phoenix Saga," the Shi'ar Empire deemed Jean Grey too dangerous to live, since she possessed the uncontrollable power of the Phoenix. In 1980's X-Men #137, the X-Men challenged the Shi'ar's Imperial Guard to a trial by combat for Jean's life.
That fateful battle took place in the Blue Area of the Moon, where the hopelessly outclassed X-Men were defeated by the Imperial Guard before Jean ultimately sacrificed herself. Even though the Jean who died was later revealed to be a Phoenix-created duplicate, that last stand is still one of the X-Men's greatest defeats.
The X-villain Apocalypse also struck his most devastating blow against the X-Men on the Blue Area of the Moon. At his lunar base, Apocalypse infected an infant Cable with a lethal techno-organic virus. To save his son's life, Cyclops made the heart-breaking decision to send Cable into the far future for treatment in 1991's X-Factor #68, by Jim Lee, Whilce Portacio and Chris Claremont.
Now, Cyclops has reclaimed the site of those twin losses to build a future with his family, namely the wife and son he thought he lost there.
On a similar note, the Phoenix wore Jean's old costume from the '60s and '70s in its infamous last stand, and Jean recently began wearing it again for the first time since that battle in House of X. While several decades of her existence were defined by her relationship to the Phoenix, Jean is reclaiming her history by embracing her pre-Phoenix identity as a hero while planting a flag on the spot where the Phoenix died in her name.
While the Blue Area of the Moon doesn't hold such a tragic meaning for everyone living at the Summer House, all of its residents have spent considerable time in space. Since Cyclops and his brothers gave Corsair a Krakoa portal seed to link the Starjammers' ship with the Summer House, it doesn't seem like these mutants are planning to stay earthbound anytime soon.