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The 365 Days of Astronomy

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Site title: The 365 Days of Astronomy

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Message History

Hosted by: Dr. Pamela L. Gay (@CosmoQuest)

From July 22, 2026.

On July 20, the world celebrates International Moon Day. This UN designated holiday marks the anniversary of humanity's first landing on the Moon. The Apollo 11 landing in 1969 is now only a distant memory o...


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https://www.youtube.com/watch?v=IQtdQ94jy8I

From Oct 17, 2017.

Hosted by: Fraser Cain (@frasercain)

Some comets orbit the Sun on a regular basis, but others come...


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Hosted by our Director, Avivah Yamani.

Explore the August 2026 equatorial sky, from the Perseids and Milky Way to bright planets and the August 12 total solar eclipse.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.

Just visit:


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Hosted by Steve Nerlich.

We are still out there.

Dear Cheap Astronomy – Why do some space missions last so long?

So, we're all familiar with the stories of the Mars rovers, Spirit and Opportunity, landing with mission lifespans of 90 days, that then went on to rove the surface of Mars for 15 years. And the Voyager probes, launched in 1977, were s...


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http://www.astronomycast.com/archive/

From October 19, 2009.

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (


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