The bestselling adaptation of the iconic video game Halo: Combat Evolved featuring the Master Chief—part of the expanded universe based on the award-winning video game series! 2552. Having barely escaped the final battle for Reach against the vast alien alliance known as the Covenant, the crew of the Pillar of Autumn, including Spartan John-117—the Master Chief—and his AI companion Cortana, is forced to make a desperate escape into slipspace. But their destination brings them to an ancient mystery and an even greater struggle. In this far-flung corner of the universe floats a magnificently massive, artificial ringworld. The crew’s only hope of survival is to crash-land on its surface and take the battle opposing the Covenant to the ground. But they soon discover that this enigmatic ringworld is much more than it seems. Built one hundred thousand years ago by a long-lost civilization known as the Forerunners, this “Halo” is worshipped by the Covenant—a sacred artifact they hope will complete their religious quest for supposed transcendence, and they will stop at nothing to control it. Engaging in fierce combat, Master Chief and Cortana will go deep into the Halo construct and uncover its dark secret and true purpose—even as a monstrous and far more vicious enemy than the Covenant emerges to threaten all sentient life on Halo and the galaxy beyond…

An original full-length novel set in the Halo universe and based on the New York Times bestselling video game series! Just hours following their climactic battle on the Forerunner planet Genesis, the Spartans of Blue Team and Fireteam Osiris find themselves running for their lives from the malevolent machinations of the now-renegade artificial intelligence Cortana. But even as they attempt to stay one step ahead, trouble seems to find Spartan Edward Buck no matter where he turns. A secret mission enacted by the Office of Naval Intelligence could possibly help turn the tide, and has Buck reluctantly agreeing to reform his old team, Alpha-Nine. Because if the band is really getting back together for this one, that means everybody—including the Spartan who Buck never wants to see again, the one who committed the ultimate betrayal of trust…

This collection dives into the Halo universe from the perspective of those who fought and died to save humanity—and those who vowed to wipe it out.

An original novel set in the Halo universe—based on the New York Times bestselling video game series! 2559. Formerly one of the Covenant’s greatest and most fearsome warriors, Arbiter Thel ‘Vadam is now allied with his former human enemies while deeply entrenched in leading the Sangheili people to a new era of unification. But his aspirations are under constant threat, whether by the dangerous, warring factions of rival Sangheili keeps, or the relentless shadow of oppression spread by the renegade artificial intelligence Cortana​​. An opportunity to break Cortana’s chains has suddenly presented itself through the rumored existence of an ancient artifact located on the hostile world of Netherop. Spartan Olympia Vale, trained with the skills to live and thrive among the Sangheili, also recognizes this alien prize as an essential means to aid humanity in reaching the same goal of freedom. But behind the scenes, both ‘Vadam and Vale are being manipulated by a mysterious figure with their own agenda. And to make matters worse, all involved are unknowingly placing themselves at perilous odds with forces beyond their comprehension…

A must-have for any Halo fan, this official guide is the most comprehensive book ever written about the video game franchise, created by the game’s developers. This official, comprehensive, authoritative guide to the Halo universe, written in collaboration with 343 Industries, the developers of the "Halo" franchise, marks the first time that a book incorporates the entirety of the "Halo" canon, including the games, books, comics, live-action and animated entertainment, and more. The book also includes over 50 specially commissioned full-color paintings showcasing vehicles, artificial intelligence, weapons, ships, and never-before-seen aspects of Halo environments. The amazing illustrations come from a variety of renowned illustrators, including Jean-Sébastien Rossbach, Leonid Kozienko, Benjamin Carré, Isaac Hannaford, and 343’s internal art team, too. For the first time ever, the timeline of the Halo universe is available in one place, charting humanity’s battles against alien forces of the Covenant, Forerunners, and the Flood--making this book an absolute must-have for Halo fans.

An important, open research topic today is to understand the relevance that dark matter halo substructure may have for dark matter searches. In the standard cosmological model, halo substructure or subhalos are predicted to be largely abundant inside larger halos, for example, galaxies such as ours, and are thought to form first and later merge to form larger structures. Dwarf satellite galaxies—the most massive exponents of halo substructure in our own galaxy—are already known to be excellent targets for dark matter searches, and indeed, they are constantly scrutinized by current gamma-ray experiments in the search for dark matter signals. Lighter subhalos not massive enough to have a visible counterpart of stars and gas may be good targets as well, given their typical abundances and distances. In addition, the clumpy distribution of subhalos residing in larger halos may boost the dark matter signals considerably. In an era in which gamma-ray experiments possess, for the first time, the exciting potential to put to test the preferred dark matter particle theories, a profound knowledge of dark matter astrophysical targets and scenarios is mandatory should we aim for accurate predictions of dark matter-induced fluxes for investing significant telescope observing time on selected targets and for deriving robust conclusions from our dark matter search efforts. In this regard, a precise characterization of the statistical and structural properties of subhalos becomes critical. In this Special Issue, we aim to summarize where we stand today on our knowledge of the different aspects of the dark matter halo substructure; to identify what are the remaining big questions, and how we could address these; and, by doing so, to find new avenues for research.