Question: Which science fiction novel was written by a Lithuanian-American science fiction author, editor, and critic

Context paragraphs:
Karen Haber: Karen Haber (born 1955) is a science fiction and non-fiction author and editor, as well an art critic and historian.  She is the author of nine novels including "Star Trek Voyager: Bless the Beasts", and co-author of "Science of the X-Men".  Other publications include "Exploring the Matrix: Visions of the Cyber Present", a collection of essays by leading science fiction writers and artists, and "Transitions with Todd Lockwood", a retrospective of the artist's work.  In 2001 she edited a Hugo-nominated essay collection celebrating J.R.R. Tolkien, "Meditations on Middle Earth".  Her short fiction has appeared in "Asimov's Science Fiction" magazine, the "Magazine of Fantasy and Science Fiction", and many anthologies.  She reviews art books for "Locus" magazine and profiles artists for various publications including "Realms of Fantasy".  With her husband, Robert Silverberg, she co-edited "Best Science Fiction of 2001", "2002", and the "Best Fantasy of 2001" and "2002" for ibooks and later, co-edited the continuation with Jonathan Strahan.

Scott Mackay: Scott Mackay is a Canadian mystery and science fiction author from Toronto, Ontario, where he still lives with his wife and two children.  He is the award-winning author of eleven novels and over forty short stories.  His short story, "Last Inning", won the 1999 Arthur Ellis Award for best short mystery fiction.  Another story, "Reasons Unknown", won the Okanagan Award for Best Literary Short Fiction in early 1999.  His first Barry Gilbert mystery, "Cold Comfort", was nominated for the Arthur Ellis Award for best mystery novel, and his science fiction novel, "The Meek", was a finalist for the prestigious U.S. John Campbell Memorial Award for Best SF Novel of 2001.  His novels have been published in six languages.

Michaelmas (novel): Michaelmas (1977) is a science fiction novel by American writer Algis Budrys.

Andrew Sawyer: Andrew "Andy" Sawyer (born 1952) is a librarian, critic and editor, as well as an active part of science fiction fandom (although he himself has not written much science fiction).  Sawyer is the full-time Librarian/Administrator of the Science Fiction Foundation Collection in the Special Collections Department in the Sydney Jones Library at the University of Liverpool, as well as Course Director of the University's M.A. in Science Fiction Studies program.  He also serves as Reviews Editor for "Foundation: The International Review of Science Fiction".  For his work and commitment to the science fiction community, the Science Fiction Research Association awarded him their Thomas D. Clareson Award for Distinguished Service in 2008.

Robert A. W. Lowndes: Robert Augustine Ward "Doc" Lowndes (September 4, 1916 – July 14, 1998) was an American science fiction author, editor and fan.  He was known best as the editor of "Future Science Fiction", "Science Fiction", and "Science Fiction Quarterly", among many other crime-fiction, western, sports-fiction, and other pulp and digest sized magazines for Columbia Publications.  Among the most famous writers he was first to publish at Columbia was mystery writer Edward D. Hoch, who in turn would contribute to Lowndes's fiction magazines as long as he was editing them.Lowndes was a principal member of the Futurians.  His first story, "The Outpost at Altark"for "Super Science" in 1940, was written in collaboration with fellow Futurian Donald A. Wollheim, uncredited.

Algis Budrys: Algirdas Jonas "Algis" Budrys (January 9, 1931 – June 9, 2008) was a Lithuanian-American science fiction author, editor, and critic.  He was also known under the pen names Frank Mason, Alger Rome, John A. Sentry, William Scarff, and Paul Janvier.

Gardner Dozois: Gardner Raymond Dozois ( ) (born July 23, 1947) is an American science fiction author and editor.  He is the founding editor of "The Year's Best Science Fiction" anthologies (1984–present) and was editor of "Asimov's Science Fiction" magazine (1984–2004), garnering multiple Hugo and Locus Awards for those works almost every year.  He has also won the Nebula Award for Best Short Story twice.  He was inducted by the Science Fiction Hall of Fame on June 25, 2011.

Baird Searles: William Baird Searles (1934–1993) was a science fiction author and critic.  He was best known for his long running review columns for the magazines "Asimov's" (reviewing books), "Amazing", and "Fantasy & Science Fiction" (reviewing films, television and related media).  He also did occasional reviews for other publications, including "The New York Times", "Publishers Weekly", and "The Village Voice".  He wrote several non-fiction works on the science fiction genre.  Searles managed a science fiction and fantasy bookstore in New York City's Greenwich Village, the Science Fiction Shop, which is no longer in business.

Timescape: Timescape is a 1980 science fiction novel by American writer Gregory Benford (with unbilled co-author Hilary Foister, Benford's sister-in-law, who is credited as having "contributed significantly to the manuscript").  It won the 1981 Nebula and 1980 British Science Fiction Award, and the 1981 John W. Campbell Memorial Award for Best Science Fiction Novel.  The novel was widely hailed by both critics of science fiction and mainstream literature for its fusion of detailed character development and interpersonal drama with more standard science fiction fare such as time travel and ecological issues.

John Boyd (author): John Boyd was the primary pen-name of Boyd Bradfield Upchurch (October 3, 1919 – June 8, 2013), an American science fiction author.  His best known work is his first science fiction novel, "The Last Starship from Earth", published in 1968.  Boyd wrote eleven science fiction novels, five other novels, and one biography.  The majority of his novels were published by US publisher Weybright & Talley, with later ones appearing from SF publishers.  He was born in Atlanta, Georgia.

Supporting paragraphs: Michaelmas (novel) Algis Budrys
Answer: Michaelmas