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\title{Science AMA Series: I'm David Baron, a science writer and umbraphile
(eclipse chaser). I've witnessed five total solar eclipses around the
world and have written a book about one that crossed America's Wild West
in 1878. AMA!}



\author[1]{Eclipsejunkie }%
\author[1]{r/Science AMAs}%
\affil[1]{Affiliation not available}%


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  \date{April 23, 2026}


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*** THIS AMA IS NOW OVER, BUT I WILL CHECK BACK FROM TIME TO TIME TO
ANSWER ADDITIONAL QUESTIONS. THANKS TO EVERYONE WHO PARTICIPATED. I WISH
YOU CLEAR SKIES ON AUGUST 21! *** I hope you've got plans to experience
the total solar eclipse that will cross the United States on August 21.
It will be a mind-blowing, awe-inspiring, not-to-be-missed spectacle!
I've been chasing total eclipses since I saw my first, in Aruba, in
1998. It was such a moving, addictive experience that I just had to
repeat it. (You can read about my obsession/hobby here and here.) I also
became fascinated with the history of eclipses, which led me to write my
new book, American Eclipse: A Nation's Epic Race to Catch the Shadow of
the Moon and Win the Glory of the World. My book tells the true story of
the total solar eclipse of July 29, 1878, which crossed America's
western frontier, from Montana Territory to Texas. In the nineteenth
century (and even today), total eclipses were keenly important for
astronomers, enabling them to probe the outer reaches of the sun and the
inner reaches of the solar system. In 1878, many of the era's great
scientists traveled to Wyoming and Colorado to conduct their studies in
the midday darkness. American Eclipse focuses on three remarkable
individuals. Thomas Edison, age 31 and a recent celebrity due to his
invention of the phonograph, traveled to Wyoming with a new device (the
tasimeter) to study the sun's corona. James Craig Watson, an astronomer
at the University of Michigan, used the eclipse to search for a
mysterious planet called Vulcan, which scientists believed circled the
sun within the orbit of Mercury. And Maria Mitchell, professor of
astronomy at Vassar College, used the eclipse for political/social
purposes. She assembled an all-female expedition to Denver, to
demonstrate to a skeptical public that women could equal men as
scientists. I love to talk about solar eclipses! Ask me about the
eclipse of 1878, the upcoming one on August 21, or anything else. I can
also offer eclipse-viewing advice. I recently gave a TEDx talk about
eclipse chasing, and it's now online here. And I wrote a blog post about
the August 21 eclipse for Scientific American here. I should also
mention that my friends at NOVA PBS will be producing a live broadcast
on Facebook during the eclipse from Irwin, Idaho. It'll be hosted by
science journalist Miles O'Brien---follow them on Facebook to get more
information and updates. ---David%
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