147
edits
Changes
Jump to navigation
Jump to search
Line 58:
Line 58: − +
→Contemporary Physics
*Evidence suggests that the matter in the universe that humans can currently detect directly is only a fraction of the matter that actually exists. Attempts to discover the nature of the as-yet-undetectable [[dark matter]] are underway.
*Evidence suggests that the matter in the universe that humans can currently detect directly is only a fraction of the matter that actually exists. Attempts to discover the nature of the as-yet-undetectable [[dark matter]] are underway.
*The universe is known to be expanding at an accelerated rate. Such acceleration requires energy, but the form and source of this [[dark energy]] is not well-understood.
*The universe is known to be expanding at an accelerated rate. Such acceleration requires energy, but the form and source of this [[dark energy]] is not well-understood.
*Quantum mechanics has not yet successfully been applied to the gravitational interaction. At huge energy scales, where both quantum mechanics and general relativity are required to describe the system, the known laws of physics break down. Attempts to discover a quantum theory of gravity have led to [[superstring theory]] and [[m-theory]], but to date neither have permitted the design of a technologically feasible experiment to verify them.
*Quantum mechanics has not yet successfully been applied to the gravitational interaction. At huge energy scales, where both quantum mechanics and general relativity are required to describe the system, the known laws of physics break down. Attempts to discover a quantum theory of gravity have led to [[string theory]] and [[m-theory]], but to date neither have permitted the design of a technologically feasible experiment to verify them.
*General relativity predicts the existence of gravitational waves, but none have been conclusively detected. Due to the weakness of the gravitational interaction, extremely sensitive detectors are required. The [[LIGO]] project is an example of current efforts to detect such waves.
*General relativity predicts the existence of gravitational waves, but none have been conclusively detected. Due to the weakness of the gravitational interaction, extremely sensitive detectors are required. The [[LIGO]] project is an example of current efforts to detect such waves.