redshifting
Light waves lengthening
Redshifting is the phenomenon where light from distant objects shifts toward longer, redder wavelengths as those objects move away from the observer.
In astronomy, redshift reveals that galaxies are receding from us, evidence that the universe is expanding: The farther a galaxy is, the more its light is redshifting.
The term also applies loosely to any increase in wavelength, as when light escapes a strong gravitational field.
Spatial repetition interval
- spectrumContinuous range of values
- spectroscopyStudy of light-matter interaction
- emissionDischarged substance or act
- absorptionProcess of taking in
spectral lines · blueshift · frequency · photon · light · Lyman-alpha · electromagnetic · stretching
Increase in scope
- universeComplete system or domain
- Big BangUniverse's explosive origin
- recessionProlonged economic decline
- galaxiesGravitationally bound stellar assemblies
quasars · light-years · dark energy · cosmic · inflation · spacetime · megaparsecs · parsecs
Byword for genius
- relativityHow observers differ
- gravity wellRegion of curved spacetime
- black holeCollapsed star's remnant
- spacetime curvatureDistortion of dimensional fabric
time dilation · escape velocity · event horizon · general relativity · mass · warping
wavelength
Spatial repetition interval
- spectrumContinuous range of values
- spectroscopyStudy of light-matter interaction
- emissionDischarged substance or act
absorption · spectral lines · blueshift · frequency · photon · light · Lyman-alpha · electromagnetic · stretching · continuum
expansion
Increase in scope
- universeComplete system or domain
- Big BangUniverse's explosive origin
- recessionProlonged economic decline
galaxies · quasars · light-years · dark energy · cosmic · inflation · spacetime · megaparsecs · parsecs · observable universe
Einstein
Byword for genius
- relativityHow observers differ
- gravity wellRegion of curved spacetime
- black holeCollapsed star's remnant
spacetime curvature · time dilation · escape velocity · event horizon · general relativity · mass · warping
redshiftingblueshifting
Doppler effect toward violet
blueshift · approaching · contracting · collapsing · converging
shift, shifting, shiftless, shiftiness, infrared, redshift, shiftwork, redshifts, redshifted