The Night the Stars Fell: The 1833 Leonid Storm and This Week’s Shower

Before dawn on November 13, 1833, the sky over eastern North America seemed to come apart. Meteors fell so thickly that people woke to the light in their windows. Later estimates run to tens of thousands an hour. In New Haven, a Yale professor named Denison Olmsted was woken by a neighbour, watched until sunrise, and then wrote to the local paper asking anyone who had seen the display to send him the details.

That letter is one reason meteor science exists. The shower behind it comes back every November, and this year it peaks on Tuesday night.

Layer 01 · The scienceWhat a Leonid is

Each November, Earth crosses a trail of dust left by comet 55P/Tempel–Tuttle, which circles the Sun about every 33 years. The grains are mostly no bigger than sand. They hit the upper atmosphere at about 71 kilometres per second, faster than any other major shower, which is why Leonids are quick and bright and often leave a glowing train behind them.

In most years, including this one, that means 10 to 15 meteors an hour. When Earth passes through a dense, recently shed ribbon of debris, the rate jumps by orders of magnitude. It happened in 1833 and 1866. In 1966, observers in the western United States estimated more than 40 meteors a second for a short spell. The last strong returns came between 1999 and 2002.

Olmsted’s contribution was to treat the public as an instrument. From the reports he gathered, he saw that every meteor’s path traced back to one point in the constellation Leo, and that the point moved with the stars through the night. Weather does not do that. Whatever was falling was coming from space. Three decades later astronomers matched the stream’s orbit to the newly discovered comet Tempel–Tuttle.

Layer 02 · The historyThe year the stars fell

Lakota communities kept winter counts: pictorial calendars in which each year is named for its most memorable event. The winter counts held by the Smithsonian mark 1833–34 with falling stars. In the 1880s the Smithsonian scholar Garrick Mallery used that shared entry to line the counts up with the Western calendar, so a meteor storm became the key that dated decades of Lakota history.

The same night was read very differently elsewhere. Some newspapers and preachers took it as a sign of judgment, others as a warning of a hard winter. The earliest record of the shower usually cited is far older still, from 902 CE.

One sky, and at least three readings of it: a calendar marker, an omen and a data set. That contrast is the reason this site exists.

Layer 03 · The astrologyWhat the tradition does and does not say

The radiant sits in the Sickle of Leo, near Regulus. Babylonian star lists call that star “the King”, and the name we use is Latin for “little king”.

Traditional astrology has very little to say about annual meteor showers, for a simple reason: nobody knew they were annual until the nineteenth century. What the older texts do contain is advice on sudden “falling stars”. Ptolemy’s Tetrabiblos, from the second century CE, treats them mostly as weather signs, pointing to winds from the direction they fall.

Astrologers who work with the Leonids today tend to read them through Leo’s themes of visibility and courage. That is a modern interpretation, not an inherited one, and we would sooner say so than dress it up as ancient.

How to watch on November 17–18

• Go out after midnight. The Moon will have set and Leo will be climbing in the east.
• Get away from direct lights and give your eyes 20 minutes to adapt. Skip the phone, or use a red light.
• Lie back and take in as much sky as you can. You do not need to face Leo, and you do not need a telescope.
• Check moonset and twilight for your town on timeanddate.com before you go.