Sorry I took so long, here are the quotes. Halo Cryptum; ch. 10. From those inner secrets, Forerunners have prodded sufficient power to change the shape of worlds, move stars, and even to contemplate shifting the axes of entire galaxies. We have explored other realities, other spaces—slipspace, denial of locale, shunspace, trick geodetics, natal void, the photon-only realm called the Glow. Inter dimensional travel. Ghosts of Onyx; ch. 36. Kurt flickered on his helmet's tactical lights, and panned them over the chamber. Organometallic appendages cradled each pod and radiated branches that connected to banks of two-meter cubes. On closer inspection, Kurt saw a faint light leaking from these cubes… and staring closer, he noticed they were not at all cubes—their edges distorted and radiated extra dimensions. He staggered back, hands reflectively grasping for his temples. Disorientation washed over him as he tasted the faint green light, inhaled the dusty odors of meaning from the symbols on the floor, and heard the bell like tinkling of the organic electronics of the pods. He sank to one knee and the tangled sensory input faded. "Stand back," Kurt warned the others. Over the COM he said, "Will, escort Dr. Halsey up here." Another wave of disorientation hit Kurt and his vision swam. When he again could see. Dr. Halsey knelt next to him. "Move him away from the machines," she told Will. Will dragged him back to the room's entrance, and Kurt's vision immediately cleared and the dizziness vanished. "What was that?" he asked Dr. Halsey. "Unshielded Slipspace field," she said. Her face was a mask of concentration, staring at the cubic machine housing. Frowning, she crossed to the pods. "Linda," she said, "your assistance please." Linda moved up to Dr. Halsey, her sniper rifle aimed at the floor. "Use your weapon's range finder; point at the interior of the pod." Linda nodded, raised her rifle, and aimed at the Spartan inside the pod. After a moment, she lowered the weapon, checked her Oracle scope's settings, and then repeated the procedure. She shook her head. "You are reading an infinite range?" Dr. Halsey said. "Yes," Linda replied, uncharacteristic annoyance in her tone. "There must be something wrong with it." "No," Dr. Halsey replied. "I'm afraid it is in perfect working order." She turned to Kurt. "I cannot revive your Spartans or the other three, Lieutenant Commander. They are not in cryogenic suspension." Kurt shook off the last traces of confusion. "Explain," he said. "They are encased in a Slipspace field. The process to stabilize such a field in normal space is well beyond any technology we or the Covenant possess. Essentially these Spartans are here, but not, extruded into an alternate set of spatial coordinates and excluded from time." "They're right here," Linda said, and pointed at the pods. "No," Dr. Halsey said. "You are merely seeing their afterimage. It's like looking at a mass accelerated past the event horizon of a black hole. Its image may linger there forever, but it is gone." "So they're gone?" Linda whispered. "Oh no," Dr. Halsey replied. "They're right here." Kurt said, "You just said they're gone. Which is it?" Dr. Halsey considered a moment and then replied, "Both. The quantum-mechanical implications do not translate to simple, nonparadoxical, classical terms." "Then let's stick to practical terms," Kurt said, growing annoyed. "Are they safe?" She tilted her head, considering, and then replied, "You could detonate a nuclear warhead on these pods and because the extruded Slipspace within is not in this dimension, there would be no effect to their contents." This process can also be reversed. Halo Primordium; ch. 41. The Didact hesitated for just an instant, as if trying to understand, but anger overcame him. He made a swift gesture like swinging a sword. The controls flared, then vanished, and the mesh around the Captive’s platform spread between them a far more intense, blue-green glow. “Let your life race ahead,” the Didact said. “You were made to survive deep time, but now it will arrive all at once. No sweetness, no more lies! Let a billion years pass in endless silence and isolation. . . .” He choked on his fury and doubled over, contorted with his own agony, his own awareness of a great crime about to be committed—and another crime avenged. The mesh held the inverse of a stasis field, the perverse of a timelock. Above the platform, the light assumed a harsh, biting quality. The Captive’s mouthparts vanished in a blur, and then, abruptly stilled. Its gray surface crazed with thousands of fine cracks. Limb after limb fell away. The torso split and collapsed, puffing out a much larger dusty cloud—all contained within the perimeter of the mesh and its field. The head split down the middle and the two faceted eyes lay for a moment atop a pile of shards and cascading gray dust, then slumped inward until only broken facets remained. They glinted in the dead blue light. The dust became finer and finer, and then—everything stopped. We watched in silence. Total entropy had been reached. The Didact knelt and pounded his great fist on the pathway. It is never easy to judge and execute a god. [...] For the Didact, the ultimate meaning of upholding the Mantle was never to accept defeat. I sensed that the Primordial had expected as much and as it decayed over the artificial fleeting of millions of centuries—as its extraordinary lifespan played out in blind silence—it had gloried in it. All was sweetness for its grinding mill. Also within installation 006 Forerunner engineers were able to build Slipspace dimensions with a different time flow. The Thursday War; ch. 8. Prone did no more than lead him in the right direction. Huragok generally spoke when spoken to and volunteered nothing. But why would they? They were just machines. Jul could see the irukan now, a long, broad strip of yellow-green leaf topped with white spikes of seed heads that stretched over the brow of a small hill. That in itself was incredible. The crop took two seasons to mature, but here it was, growing and ripening in what could only have been days. It took longer than that to germinate. He remembered playing in the fields around Bekan as a child, digging up the seeds from the furrows while the Grunts who were still busy sowing it made angry gestures at him. “How did they achieve that?” he asked. “How did they make it grow this fast?” <Many techniques,> Prone said. <And we created a bubble for them.> Jul struggled with the word bubble. “A glass house? A plant shelter?” <Slipspace. A time out of this time. Sometimes slower, sometimes faster.> No Huragok he’d ever come across could manipulate time. That made these creatures even more dangerous as a weapon for the humans to use. Or even build Slipspace dimensions within Slipspace dimensions Halsey raked her fingers through her hair, all impatience. “Well, it looks like we’ve got another slipspace bubble within this one. It’s almost as if it’s made up of concentric bubbles. Like a Russian doll.” During Halo First Strike they also encountered a Forerunner crystal that could create a fractal pocket dimension with unique spatial laws as shown at 7:20:00 to 7:23:54 http://youtu.be/3G2VJ50ZAXg

...... The forerunners have huge dimensional manipulation capabilities, let me get some quotes.