BraneStorm is currently in very early development.

From BraneStorm

Here are resources to help in developing a realistic fictional world.

Online

World Building Resources

• SpecFicWorld.com World-Building Resources for Science Fiction, Fantasy, & Horror Writers
• Orion's Arm worldbuilding links

Science

• The Extrasolar Planets Encyclopaedia
• ASTRONOMY - Visual Dictionary Online
• High Resolution Imaging Science Experiment

Fictional Worlds

• Orion's Arm
• Epona
• Furaha
• Segan 4
• Darwin 4
• ArcBuilder

Online Tools

• Planetary Parameter Calculator
• Solar System Synthesis Applet
• Various astronomical calculators

Software

• Celestia
• POV-RAY
• AstroSynthesis v2.0

Books

World Building

• World Building (Science Fiction Writing) (ISBN 158297134X)
• The Science of Science Fiction Writing (ISBN 1578860113)
• Writing Science Fiction & Fantasy (ISBN 0312089260)
• The Writer's Guide to Creating a Science Fiction Universe (ISBN 0898795362)

Aliens

• Aliens and Alien Societies (Science Fiction Writing Series) (ISBN 0898797063)
• The Science of Aliens (ISBN 0465073158)
• Expedition (ISBN 0894806297)

Science

• The Starflight Handbook: A Pioneer's Guide to Interstellar Travel (ISBN 0471619124)