Concept
Radial Velocity
An object's velocity along the line of sight.
The component of a star's velocity directed toward or away from us, measured from Doppler shifts in spectral lines — a key exoplanet detection method.
Overview
The component of a star's velocity directed toward or away from us, measured from Doppler shifts in spectral lines — a key exoplanet detection method.
See also
Azimuth
Compass direction along the horizon.
The Big Bang
How everything began, 13.8 billion years ago.
Black Holes
Regions where gravity stops light itself.
Dark Matter
The invisible mass holding galaxies together.
Dark Energy
The mysterious force accelerating the universe.
Light-Year & Astronomical Distances
Measuring the unimaginable.