Acknowledgements -- Summation : 2010 -- A history of terraforming / Robert Reed -- The spontaneous knotting of an agitated string / Lavie Tidhar -- The emperor of Mars / Allen M. Steele -- The things / Peter Watts -- The sultan of the clouds / Geoffrey A. Landis -- The books / Kage Baker -- Re-crossing the Styx / Ian R. MacLeod -- And ministers of grace / Tad Williams -- Mammoths of the Great Plains / Eleanor Arnason -- Sleeping dogs / Joe Haldeman -- Jackie's boy / Steven Popkes -- Flying in the face of God / Nina Allan -- Chicken Little / Cory Doctorow -- Flower, mercy, needle, chain / Yoon Ha Lee -- Return to Titan / Stephen Baxter -- Under the moons of Venus / Damien Broderick -- Seven years from home / Naomi Novik -- The peacock cloak / Chris Beckett -- Amaryllis / Carrie Vaughn -- Seven cities of gold / David Moles -- Again and again and again / Rachel Swirsky -- Elegy for a young elk / Hannu Rajaniemi -- Libertarian Russia / Michael Swanwick -- The night train / Lavie Tidhar -- My father's singularity / Brenda Cooper -- The starship mechanic / Jay Lake and Ken Scholes -- Sleepover / Alastair Reynolds -- The taste of night / Pat Cadigan -- Blind cat dance / Alexander Jablokov -- The shipmaker / Aliette de Bodard -- In-fall / Ted Kosmatka -- Chimbwi / Jim Hawkins -- Dead man's run / Robert Reed -- Honorable mentions : 2010.