Fraction
percentages or ratios implied by "a special kind of energy coming out of them" and "more likely
Technical definition
A number between 0 and 1 expressing the proportion of sources with spectroscopic redshifts in a particular field.
percentages or ratios implied by "a special kind of energy coming out of them" and "more likely
A number between 0 and 1 expressing the proportion of sources with spectroscopic redshifts in a particular field.