Which Hard Sci Fi Books Focus Most On Realistic Space Travel?

In a bleak future, the man with everything wants one more thing. Her. Tiernan is a man with everything, and he’s not used to being denied what he wants. When he sees Madison from a distance, he makes the arrogant decision to take her. Her family needs her, but she has little choice except to become the Commander’s new companion, albeit reluctantly. Life in the hub of power isn’t what she expects, and neither is Tiernan. He’s dark and demanding, but there are flashes of tenderness that have her falling for the man she glimpses inside the cold and exacting commander of their territory. Which Teirnan is the real one—the tyrant or the tender lover? At first, it seems impossible that she could ever be happy with the man who forced her to give up her life, but feelings grow between them. Their relationship reaches a fragile new level that could deepen to something neither expected, if betrayal and treason don’t separate the lovers.

Beyond Earth, there is an alien species known as the Dagerstanteens. These mighty warriors are wise, strong, and powerful. Unfortunately, they're dying out slowly. Just as the royal family accepts that they will be the last, a new hope arises. Humans. As each of these aliens discovers love, humans will sacrifice much, and both worlds will change forever.This story contains graphic sex, violence, non-consent, and erotic scenes with tentacles. 18+The Alien Love Series is created by C.M. Moore, an eGlobal Creative Publishing Signed Author.

She gave up the stars for him. And he threw her away. When Aria Carter discovers her husband’s betrayal, the dream she buried years ago reignites. NASA calls with an opportunity of a lifetime: a mission to space in just one week. She takes hold of the opportunity to escape her broken marriage and reclaim the future she thought she had lost forever. But training comes with one complication, Commander Adrian Vega. Arrogant, infuriating, and devastatingly handsome, He makes it his mission to remind Aria she’s the only female in a world built for men. Their rivalry sparks in every simulation until launch day throws them together, alone among the stars. In the silence of space, teasing turns into tension, and tension into something, neither of them can fight. Yet Earth is waiting, and so is the man who once held her heart. Will Aria fall back into old gravity? Or will she choose the dangerous pull of a man who makes her feel weightless?

The moon is reachable it's something beyond the moon that may not be reachable... "You will never be more than just a mere, powerless, scared, pathetic, weak human" Lyra's venomous words still sear my mind, but they're a catalyst for the truth I've uncovered. I'm not bound by the fragile threads of mortality, I'm something more. Something ancient. Something different. I'm woven from the very fabric of the wild. The whispered secrets of the forest, the primal pulse that courses through my veins – these are the truths that define me and with this knowledge, I stand at the precipice of a transformation that could shatter the boundaries between worlds. Will I find the strength to reach beyond the moon and claim my true power, or will it consume me?

War of worlds tells of a story about a cryptoian kataros who goes about attacking and conquering planets within the milky way galaxy till he is stopped by the people who escaped from the planets he conquered and destroyed

This story is about the love between an alien and a human girl. The alien comes from his planet to find a soft-hearted man. He is the greatest scientist on his planet. He is looking for a soft and compassionate heart. They want to fit it in with other aliens to see if they feel the same emotion as humans? In his search, he finds a girl. He kidnaps her and takes her to her planet where he falls in love with her.