Boskone 43

Friday through Sunday
Sheraton Boston
Cost: $52 for full weekend; Friday $16, Saturday $36, Sunday $18 (does not include hotel room)
Website: www.boskone.org
Guest of honor: Ken MacLeod, Scottish author of ''hard science fiction" novels with a political element
Official artist: Donato Giancola, illustrator of dozens of book covers, perhaps best known for his ''Lord of the Rings" covers and Magic: The Gathering cards
Special guest: Cory Doctorow, writer, blogger, journalist
Hal Clement Science Speaker: William K. Hartmann, astronomer specializing in the moon and Mars (and author of science fiction)