Erin Decker 
Magnetospheres of the Forgotten Orbit [EPUB ebook] 
A Vacuum Tube War

2247.  Humanity clings to a forgotten age of analog technology, navigating the solar system in steam-powered vessels and communicating through a crackling network of vacuum tube satellites.  The rhythmic hum of these archaic machines is the soundtrack of civilization, a testament to a bygone era known as the Analog Epoch. But the forgotten orbit, a graveyard of obsolete technology, whispers secrets older than humanity’s reach for the stars.
Erkin Vahl, a solitary radio engineer living on the moon, finds solace in the cosmic static.  His cosmic phonograph, a relic of the past, captures the faint whispers of the universe. But one night, a new rhythm emerges, an alien heartbeat pulsing beneath the cosmic noise. Erkin unwittingly transcribes a message that throws humanity into chaos – a chilling blueprint for invasion by the Ætherians, beings of pure energy who view humanity’s analog technology as an existential threat.
From the shadows, the League of Magnetosphere Navigators emerges, dispatching Frances Miller, a pragmatic operative, to recruit Erkin.  Their mission: unite the fiercely independent asteroid miners of the Outer Belt and defend humanity’s analog legacy.  Aboard the clattering steam-powered airship, *Aurora’s Whisper*, Erkin and Frances embark on a perilous journey, navigating treacherous asteroid fields and forging uneasy alliances with shrewd barons and reclusive inventors.
But the Ætherians are not invaders, but refugees, their energy-based civilization on the brink of collapse. Humanity’s chaotic analog technology, once a threat, becomes a potential lifeline. Erkin, caught between two worlds, must find a way to bridge the gap between analog and energy, chaos and order.  In the glittering asteroid city of New Olympus, with the fate of two civilizations hanging in the balance, Erkin proposes a radical solution: a symbiotic exchange of energy, a delicate dance of diplomacy and technological brinkmanship.
Can the hum of vacuum tubes and the hiss of steam engines become the instruments of interstellar harmony?  Or will the forgotten orbit become humanity’s final resting place?  In a universe powered by steam and whispers, the future of two civilizations rests on the shoulders of a solitary radio engineer and the echoes of a forgotten age.