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Please be aware this giveaway is now closed. 

In honor of Women's History Month, we're looking back on the genius and fury of the late feminist sci-fi author.

Discover these rip-roaring sci-fi thrillers.

Octavia Butler passed away 13 years ago, but as these writers explain, her work is more urgent now than ever before.

From biographies to art anthologies, each of these incredible titles shines a fascinating light on the man behind Middle-earth.

Meet this year's must-read series.

They're coming...

This bewitching and beautiful short story collection makes a perfect keepsake.

The late author wrote epic tales of magic, fantastical creatures, and fearless warriors that Game of Thrones fans are sure to love.

Hoping for a brighter future, humanity looks to terraform the brightest planet in the solar system: Venus.

Transport yourself to a whole new setting.

The final installment of the two-part Moonbase Saga sees the leaders of a lunar colony fight for the nanotechnology they need to survive.

Humanity goes head to head with a dangerous, mobile plant species in John Wyndham's post-apocalyptic classic.

You voted! Now it's time to take a peek at the winning final cover (as promised, we'll also reveal the meaning of life).

In Timothy Zahn's Blackcollar series, a Resistance fighter teams up with space ninjas to defeat alien tyrants.

When an ex-spy receives a ticket aboard a galactic train, he's tasked with preventing the outbreak of a devastating space war.

The revolutionary subscription service offers an extraordinary library of SFF books, from classics to recent releases. 

This Moroccan-inspired novel confronts prejudice and colonialism on another planet.

In a future controlled by computers, a codifier discovers a terrifying secret that places everyone at risk.

A 14-year-old con becomes the host of an endangered dragon—and embarks on his most perilous undertaking yet.