Comet Leonard on Dec. 24, 2021

Observing

Comet Leonard: A Gift at Christmastime

Multiple bright outbursts have transformed Comet Leonard into a stunning photographic object that’s also visible without optical aid from southern locations. More disruptions are likely in store as it approaches perihelion.

Comet Leonard meets M3

Solar System

See Comet Leonard at its Best

The year's brightest comet is now on display in the predawn sky this week and next. Here's how to find it.

Celestial News & Events

How Bright Will Comet Leonard Get?

We examine circumstances and expectations for the current apparition of Comet Leonard, which may become the year's brightest comet.

Comet 67P/Churyumov-Gerasimenko

Solar System

Comet Watch 2021

If you own an 8-inch or larger telescope you might see more than a dozen new and returning comets this year, including one potential naked-eye candidate.

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