Born On Your Day
Simon Newcomb
Harris & Ewing, Public domain, via Wikimedia Commons

scientistauthor

Simon Newcomb

Author · born March 12, 1835 · died 1909

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About

Simon Newcomb was a Canadian–American astronomer, applied mathematician, and autodidactic polymath. He served as Professor of Mathematics in the United States Navy and at Johns Hopkins University.

Adapted from Wikipedia (CC BY-SA 4.0).

Milestones, by age

Dated facts from Wikidata; ages marked “about” come from year-only dates.

  1. ~39Received the Gold Medal of the Royal Astronomical Society1874
  2. ~55Received the Copley Medal1890
  3. ~63Received the Bruce Medal1898

Sources

Every fact on this page traces to one of these.

Sources (2)

Also born on March 12

Simon's most notable birthday twins

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Stephen Mandel

American hedge fund manager

1956 · United States

$2.8Bolder estimate, as of November 2020 · Forbes

Stephen Frank Mandel Jr. is an American hedge fund manager, investor, and philanthropist. He founded Lone Pine Capital in 1997, after working as the managing director at Tiger Management. According to Forbes, Mandel has an estimated net worth of US$3.9 billion as of August 2022.

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Sources (3)
Ron Jeremy
entrepreneur

Ron Jeremy

Entrepreneur

1953 · United States

Ronald Jeremy Hyatt is an American former pornographic actor and actor.

Toglenn, CC BY-SA 3.0, via Wikimedia Commons

Sources (2)
Mitt Romney
founder

Mitt Romney

Entrepreneur · Bain Capital · finance

1947 · United States

Willard Mitt Romney is an American businessman and retired politician who served as a United States senator from Utah from 2019 to 2025 and as the 70th governor of Massachusetts from 2003 to 2007.

United States Congress, Public domain, via Wikimedia Commons

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Leo Esaki
scientist

Leo Esaki

Scientist

1925 · Japan

Leo Esaki is a Japanese physicist who shared the 1973 Nobel Prize in Physics with Ivar Giaever and Brian Josephson for his work on tunneling in semiconductors, which led to his invention of the tunnel diode that exploits this phenomenon.

日本学士院, CC BY 4.0, via Wikimedia Commons

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Christina Grimmie
actor

Christina Grimmie

Actor

1994–2016 · United States

Christina Victoria Grimmie was an American singer, songwriter, and internet personality. In 2009, she began posting covers of popular songs on YouTube. After releasing her debut EP, Find Me (2011), her YouTube channel reached one million subscribers.

Justin Higuchi, CC BY 2.0, via Wikimedia Commons

Sources (2)