The Baen Memorial Short Story Award is open until February 1, 2019.
Free to enter.
Write a short story of no more than 8,000 words, that shows the near future (no more than about 50-60 years out) of manned space exploration.
First prize is publication on the Baen Books website, an engraved award, free entry into the 2019 International Space Development Conference, a year’s membership of the National Space Society, Baen books and space merchandise.
More here.