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The theoretical study of time travel generally follows the laws of general relativity. Quantum mechanics requires physicists to solve equations describing how probabilities behave along closed timelike curves (CTCs), which are theoretical loops in spacetime that might make it possible to travel through time. [1] [2] [3] [4]
Telemachus appears in Alfred, Lord Tennyson's 1833 poem "Ulysses", where the title speaker (based on Dante's version) expresses disappointment in his son. Telemachus is a frequent character in the poetry of Louise Glück. [16] Telemachus was the name of Carole King's cat and is pictured on the cover of her album Tapestry. [17]
With the weapon Circe gave him, Telegonus killed his father unknowingly. Telegonus then brought back his father's corpse to Aeaea, together with Penelope and Odysseus' son by her, Telemachus. After burying Odysseus, Circe made the other three immortal. Circe married Telemachus, and Telegonus married Penelope [34] by the advice of Athena. [35]
Telemachus married Telegonus' mother, the enchantress Circe, while Telegonus took to wife Odysseus' widow Penelope. [6] By Penelope, he was the father of Italus who, according to some accounts, gave his name to Italy. [7] What appears to be later tradition holds that Odysseus would also be resurrected by Circe after he was killed by Telegonus. [8]
Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light in vacuum (c). The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel at the speed of light, and that nothing may travel faster.
Space and Time included the first public presentation of spacetime diagrams (Fig. 1-4), and included a remarkable demonstration that the concept of the invariant interval (discussed below), along with the empirical observation that the speed of light is finite, allows derivation of the entirety of special relativity. [note 6]
Additionally, every space location has a future time, implying that an object may stay at any location in space indefinitely. Any single point on such a diagram is known as an event . Separate events are considered to be timewise separated if they differ along the time axis, or spacewise separated if they differ along the space axis.
The 2003–2006 SMART-1 of the European Space Agency used another low energy transfer from the ITN. [citation needed] In a more recent example, the Chinese spacecraft Chang'e 2 used the ITN to travel from lunar orbit to the Earth-Sun L 2 point, then on to fly by the asteroid 4179 Toutatis. [citation needed]