Amateur activity

Comet Observing

Following comets as they brighten, grow tails, and fade — estimating their brightness and sketching or photographing their changing structure. Amateurs have a long tradition of discovering comets, and their brightness estimates track how these unpredictable visitors evolve.

ALPO

Across public astronomy

ALPO

Knowledge connections

Associated withALPO
Associated withALPO

Sources

Facts on this topic will be cited from these primary and reference sources.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.

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Comet Observing

Methods, objects & tools

Across public astronomy

Knowledge connections

Sources

Comet Observing

Methods, objects & tools

Across public astronomy

Knowledge connections

Sources