The second hypothesis is put to the test and is found true: there is change in the heaven (novae, comets, solar spots).
This list attempts to include only the brighter or more notable novae.
He was one of the most successful visual discoverers of novae and comets.
Novae are categorised as "fast", "slow" or "very slow", depending on the behaviour of their light curve.
The same year he attempted to interpret the spectrum of novae.
The latter housed the city's bankers, and after a fire were renamed "tabernae novae" (new shops).
Searching the photographic record, he found 11 more novae.
Other names, mainly for variable stars (including novae and supernovae), are being added all the time.
