Hard SF
http://groups.yahoo.com/group/hardsf/
Hard SF discussion group by e-mail; requires free account with Yahoo and group
http://www.goodreads.com/group/show/954.Hard_SF
Group at Goodreads.com – sort of a combination literary / social network site. The Goodreads group is affliated with the Yahoo group.
Usenet / Google group: rec.arts.sf.science
http://groups.google.com/group/rec.arts.sf.science
http://en.wikipedia.org/wiki/Hard_science_fiction
Wikipedia entry on Hard SF
http://io9.com/367792/bad-movie-physics-a-report-card
Bad science in SF movies
Discussion of hard SF novels with good characterization
http://www.amazon.com/tag/science%20fiction/forum?_encoding=UTF8&cdForum=FxWK0QNW07Z4M7&cdThread=Tx2RGU4Y30ACENN
http://www.hardsciencefiction.rogerdeforest.com/
Site seems more oriented to selling certain books, but it might be useful
(looks like some of it is from hardsf.net years ago)
Various Sites
http://www.sfsite.com
List of award winners, reviews
http://www.magicdragon.com/UltimateSF/SF-Index.html
Lists of links; list of books; hasn't been updated for years
http://www.sflovers.org
Links and info
http://www.sffworld.com
Various info and reviews; forums
http://users.tpg.com.au/sykespj/scifilists/
Lists and reviews
The Internet Speculative Fiction Database
http://www.isfdb.org
Bibliographies, awards info, etc.
http://www.sff.net/
Oriented to writers, SFWA, etc.
http://www.sfwa.org
SF & F writers group
http://www.sfwa.org/links/
Links for writers and readers; SFWA member web pages; SFWA® Webring
The University of California at Riverside describes its Eaton Collection as "the world's largest publicly-accessible science fiction and fantasy collection"
A YouTube video series on the collection is at:
http://www.uctv.tv/science-fiction/
The Eason Collection is at:
http://eaton.ucr.edu/
Science Fiction Studies
Published at DePauw University
Center for Study of SF
http://www.ku.edu/~sfcenter/
The SF Hub for Science Fiction Research
http://www.sfhub.ac.uk/
Materials for Studying Science Fiction
http://www.wsu.edu:8080/~brians/science_fiction/
http://www.larryniven.org
Larry Niven site; reviews, interviews, etc.
http://www.larryniven-l.org/
Larry Niven mailing list
http://wormsscifi.com/haven/
Forums
http://www.orionsarm.com
Galactic future "world building project" trying to comply with science
http://www.arthurcclarke.net
Info related to author Arthur C. Clarke
http://www.amazon.com/exec/obidos/redirect?tag=hardsfgrouaty-20&path=tg/listmania/list-browse/-/36PW20JZ7CP1T
Listmania at amazon of the books discussed at Yahoo group HardSF
http://rifters.com/real/shorts.htm
Peter Watts' site including a couple of free e-books
http://wiz.cath.vt.edu/exper/kcramer/AOW.html
Site of the anthology The Ascent of Wonder (by David Hartwell & Kathryn Cramer), includes book intros & story notes
http://wiz.cath.vt.edu/exper/kcramer/HSFR/
Site of anthology The Hard SF Renaissance ed. by Hartwell & Cramer
http://www.costumesupercenter.com/scifi-resource.html
Links to SF & F resources, many for pop SF (TV, movies, etc.)
http://www.sffaudio.com
SF & F audio books
http://sciencefictionbiology.com/directory/
SF About Or Involving Biology
Audio: http://sciencefictionbiology.com/directory/category/story-type/audio/
Novels: http://sciencefictionbiology.com/directory/category/story-type/novel/
Alternative Histories sites:
http://www.uchronia.net
Uchronia site - [Just as “utopia” translates as “no place”, “uchronia” translates as “no time.” The term is used in some countries for alternative history.]
http://4dw.net/aerden/marksbooks/althist.html
Alternative history books & links
http://www.alternatehistory.com/discussion/index.php
Alternate History Discussion Board
http://www.anthonymayer.net/ah/history.html
soc.history.what-if (alternative history group)
http://www.amazon.co.uk/s?ie=UTF8&index=books-uk&field-keywords=Alternative%20History&page=1
Amazon alternative history section