Theoria de chordas
Le theoria del chordas (in anglese String theory) es un theoria ubi le physica del quantos e le relativitate general coalesce. Illo describe non solo le gravitation sed etiam altere interactiones fundamental del quantos; a causa de isto, illo es frequentemente appellate theoria del toto.

Le theoria del chordas es stabilite sed ancora non explica clarmente varie questiones general que non ha potite esser experimentate ni provate. Non obstante, un multitude de physicos anhela studiar iste theoria e probar lo. Le theoria del chordas e le theoria del superchordas non on experimentate ni confirmate, ma multe scientistas crede in su rationes theoric.

Ligamines externe 
 
  – A Three-Hour Miniseries with Brian Greene by NOVA (original PBS Broadcast Dates: October 28, 8-10 p.m. and November 4, 8-9 p.m., 2003). Various images, texts, videos and animations explaining string theory.
  – A popular text by a string physicist, working for the French CNRS.
  – Online tutorial.
  – A short interactive introduction to string theory based on Michio Kaku's "Beyond Einstein" (Microsoft Encarta Encyclopedia article).
  – A blog supporting string theory.
  – A moderated newsgroup for discussion of string theory (a theory of quantum gravity and unification of forces) and related fields of high-energy physics.
  – Four lectures, presented at the NATO Advanced Study Institute on Techniques and Concepts of High Energy Physics, St. Croix, Virgin Islands, in June 2000, and addressed to an audience of graduate students in experimental high energy physics, survey basic concepts in string theory.
  – Slides and audio from an Ed Witten lecture where he introduces string theory and discusses its challenges.
  – Invited Lecture at COSLAB 2004, held at Ambleside, Cumbria, United Kingdom, from 10 to 17 September 2004.
  – A guide to the string theory literature.
  – A comprehensive compilation of materials concerning string theory. Created by an international team of students.
  – A criticism of string theory.
  – A blog critical of string theory.

Physica
Astrophysica