Raised to be a housemaid, she swept the night sky for comets — and became the first woman paid to do science.
Smallpox scarred Caroline Herschel at three; typhus at ten cost her the sight of one eye and stunted her at four foot three. Her mother decided that a girl like that would never marry, and should be trained as a household servant. In 1772 her brother William rescued her to Bath, to sing in his oratorios. Then William caught the astronomy bug — and Caroline, who had been taught almost nothing beyond reading and writing, learned the mathematics to keep up.
She ground mirrors, kept the books, and wrote down every number he shouted from the telescope. Then, alone in the garden on her own small sweeper, she began to find things he hadn't: nebulae, galaxies, and eight comets. In 1787 King George III put her on a salary of £50 a year. No woman in Britain had ever been paid to do science before.
Ninety-seven years, mostly at night
The lifeline
1750
Born 16 March in Hanover, eighth child of a regimental oboist
1772
Leaves for Bath to keep house — and sing — for her brother William
1783
Begins sweeping the sky with her own small comet-seeker
1786
1 August: finds her first comet, while William is away
1822
William dies; she returns to Hanover and keeps working
1848
Dies 9 January in Hanover, aged 97
By the numbers
The measure of her
8
Comets she discovered between 1786 and 1797
£50
A year from the King, from 1787 — the first salary paid to a woman for science
2,500
Nebulae and clusters she re-ordered into zones for her nephew, in her seventies
168
Years until another woman won the RAS Gold Medal: Vera Rubin, 1996
What she found, and what she built
The work
1783
New nebulae of her own. On 26 February she found her first object missing from Messier's catalogue, and that same night independently found M110, a companion galaxy of Andromeda.
1783–
Recorder to the 20-foot telescope. Seated at a window, she logged and identified each nebula William called out — then reduced the night's figures the next morning.
1786
"My sister's comet." Her first comet, announced to the Royal Society; William was summoned to Windsor to show it to the royal family.
1788
Comet 35P/Herschel–Rigollet, a periodic comet that still carries her name. It was not seen again until 1939.
1798
A catalogue of stars drawn from Flamsteed's observations: a full index, a list of errata, and more than 560 stars the official British Catalogue had left out. It took her 20 months.
1828
The zone catalogue of William's 2,500 nebulae, arranged for John Herschel's resurvey — work that grew into the New General Catalogue, whose NGC numbers astronomers still use.
Assistant in name, astronomer in fact
Recognition
In her lifetime
Paid as her brother's assistant; called herself "a mere tool which he had the trouble of sharpening"
Her 1802 catalogue appeared in Philosophical Transactions under William's name
Lost her place in the household, and the observatory keys, when William married in 1788
Yet honoured late: RAS Gold Medal 1828; first woman made an honorary RAS member, 1835
Today
Counted as the first professional woman astronomer
Asteroid 281 Lucretia and the lunar crater C. Herschel bear her names
A place setting at Judy Chicago's The Dinner Party
Her early diary bought by the Herschel Museum in 2023 for £108,000
The house with a planet in the garden
19 New King Street, Bath
In this narrow Georgian townhouse the Herschels gave music lessons by day and ground telescope mirrors in the workshop below. From its back garden on 13 March 1781, William spotted a "comet" that turned out to be Uranus — the discovery that made him the King's astronomer and carried Caroline, reluctantly, from the concert room to the observing book. The house is now the Herschel Museum of Astronomy.
1781
Uranus discovered from the garden — the first planet found by telescope
1778
She sings first soloist in Handel's Messiah, and turns down Birmingham
57
Pages of her early diary, 1755–1775, now kept in the music room
"The eyes of her who is glorified here below turned to the starry heavens."
— Caroline Herschel, the epitaph she wrote for her own grave, Hanover
