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Fritz Zwicky
Public domain

Fritz Zwicky

Swiss astronomer who posited dark matter (1898–1974)

Fritz Zwicky was a Swiss astronomer. He worked most of his life at the California Institute of Technology in the United States of America, where he made many important contributions in theoretical and observational astronomy. He was the first to propose supernovas as giant explosions at the end of a star's life, and neutron stars as the remnants left over after supernovas. In 1933, Zwicky was the first to use the virial theorem to postulate the existence of unseen dark matter, describing it as "dunkle Materie".

Fritz Zwicky was born on Monday, 14. February 1898.
That was day 45 of the year 1898.

Past away on Freitag February 8, 1974

Age when dead:
75 Jahre 11 Monate 22 Tage

Next birthday would be:
Thursday February 14, 1974

Fritz Zwicky is already dead since:
52 Jahre 2 Monate 16 Tage

Fritz Zwicky was alive for 27752 days.
Fritz Zwicky is already dead for 19068 days.
Difference: 8684 days (23,78 years).

Fritz Zwicky has the same birthday like
Najwa Nimri, Matt Barr and Michael Bloomberg

The death date of Fritz Zwicky is the birthday of
Mary Steenburgen, Lana Turner and Kathryn Newton

Birthday Fun Facts

Things that matter



  • Age 75 The number 75 represents the element Rhenium in the Periodic table of elements.
    Rhenium is a transition metal, widely used in industry and materials science.
  • Since you visited this page, people have been born. In total there are people born today. They all celebrate the same birthday as you.

Who has the same birthday as Fritz Zwicky?

Famous people and celebrities

Madison Iseman 29

Madison Iseman

American actress

Born: February 14, 1997

🎂 Turns 30 years
Michael Bloomberg 84

Michael Bloomberg

American businessman and politician; 108th Mayor of New York City

Born: February 14, 1942

🎂 Turns 85 years
Najwa Nimri 54

Najwa Nimri

Spanish actress and singer

Born: February 14, 1972

🎂 Turns 55 years

Same vintage - 1898

These people were born in the same year

Bertolt Brecht 58

Bertolt Brecht

German poet, playwright, and theatre director (1898–1956)

Born: February 10, 1898

Died: August 14, 1956

Would be 129 years
C. S. Lewis 64

C. S. Lewis

British writer, lay theologian, and scholar (1898–1963)

Born: November 29, 1898

Died: November 22, 1963

Would be 128 years
Erich Maria Remarque 72

Erich Maria Remarque

German-born novelist (1898–1970)

Born: June 22, 1898

Died: September 25, 1970

Would be 128 years
Liu Shaoqi 70

Liu Shaoqi

2nd President of the People's Republic of China (1898–1969)

Born: November 24, 1898

Died: November 12, 1969

Would be 128 years
Lotte Lenya 83

Lotte Lenya

Austrian singer and actress (1898-1981)

Born: October 18, 1898

Died: November 27, 1981

Would be 128 years
Peng Dehuai 76

Peng Dehuai

Chinese military leader, Marshal of the People's Republic of China (1898–1974)

Born: October 24, 1898

Died: November 29, 1974

Would be 128 years
René Magritte 68

René Magritte

Belgian surrealist (1898–1967)

Born: November 21, 1898

Died: August 15, 1967

Would be 128 years
Totò 69

Totò

Italian actor (1898–1967)

Born: February 15, 1898

Died: April 15, 1967

Would be 129 years
Zhou Enlai 77

Zhou Enlai

1st Premier of the People's Republic of China

Born: March 5, 1898

Died: January 8, 1976

Would be 129 years

Did you know? Fritz Zwicky is ...

Lost Generation

Period: 1883 ‐ 1900

At 75 years, Fritz Zwicky belongs to the "Lost Generation". Well-known figures of this generation include Frederick Banting, Heinrich Lübke und Max Beckmann.

Astrology

Zodiac

♈ Aquarius

(January 21, 1898 - February 19, 1898)

Zodiac sign

Dog

(January 21, 1898 - February 19, 1898)

Life Number

6

(Perfectionist, creative, ambitious)

Birthstone

Amethyst

(Peace, stability, clarity)

Age in absolute numbers

Since Fritz Zwicky was born...

2.397.772.800 Seconds
39.962.880 Minutes
666.048 Hours
27.752 Days
3.964 Weeks
1538 Months
75 Years
7.6 Decades
0.76 Centuries

On October 21, 2026 would be Fritz Zwicky exactly 47000 days old.
On April 12, 2032 would be Fritz Zwicky exactly 7000 weeks old.

By the way: Since you are here you are getting seconds older 😉

Milestones

Successes that speak for themselves

With 75 years alive you reached these milestones:

Sleeping

9.251 days

A human spends about one third of their life sleeping. That’s an average of around 9.251 hours per day. At your age of 76 years, that equals approximately 9.251 days (25,33 years).

Eat & Drink

1.156 days

The average person spends about 1 hour a day eating and drinking. At 76 years, you have therefore spent approximately 1.156 days eating. (3,17 years).

Toilet visits

578 days

The average person spends about 30 minutes on the toilet every day. That's a total of 578 days (1,58 years).

Wait

964 days

The average person spends about 30 minutes on the toilet every day. That's a total of 964 days (2,64 years).

Laugh

116 days

We laugh for about six minutes a day. That's actually far too less. That's a total of 116 days (0,32 years).

Brush teeth

77 days

We laugh for about six minutes a day. That's actually far too less. That's a total of 77 days (0,21 years).

Work

7.516 days

We laugh for about six minutes a day. That's actually far too less. That's a total of 7.516 days (20,58 years).




Name Zahl Beschreibung
Breaths 719.331.840 Approximately 18 Breaths per minute
Heartbeats 2.997.216.000 Approximately 50-100 heartbeats per minute, depending on your lifestyle. We'll take the average at 75.
Blink 599.443.200 A human blinks roughly 15 times per minute.
Cough 416.280 A human has an average of 15 coughs per day.
Colds 152 A person gets about 2 colds per year.
Sweat produced 4.163 A person produces approximately 0.5–1.5 liters of sweat per day, depending on lifestyle. We'll take the average at 1 liter per day.
Fart gases produced (in Liters) 27.752 A person farts approximately 12 times a day, producing almost 0.8 liters of gas.
Flies swatted 532 We swat 7 flies per year.
Mosquitoes killed 1.368 We kill approximately 18 mosquitoes per year.
Red blood cells formed 555.040.000.000.000 A person produces approximately 20 billion red blood cells per day.
Hair grown (in mm) 9.158 Our hair grows approximately 0.33mm per day.
Fingernails grown (in mm) 3.172 Fingernails grow approximately 0.8mm per week.
Cookies eaten 33.025 We eat approximately 35,000 cookies in our lifetime.
Bouts of vomiting 304 A person vomits approximately four times a year, depending on lifestyle.

Information is based on statistical average values of a person.

Travelled distances

Always on the move

According to statistical averages, you have walked 99.907 kilometers in your life...


... that corresponds to 2,49 orbits of the Earth...


... 9,15 moon orbits.


... and 4,68 Mars orbit on foot.



99.907 kilometers means:

3.799 years with a snail 🐌 (at 3m/h).
743 days on a donkey 🫏 (at 5,6km/h).
520 days on a Skateboard 🛹 (at 8km/h).
139 days travel with a subway train 🚇 (at 30km/h).
5 days on a plane ✈️ (at 800km/h)
3,57 hours on a Spaceshuttle 🚀 (at 28.000km/h)
98,53 minutes with spaceship Voyager 1 🚀 (at 60840km/h)
8,69 minutes with Parker Space Probe - the fastest object made by humans 🚀 (at 690000km/h)

and

3,37 days sonic speed (at 1234,8 km/h)
0,33 seconds light speed (at 1,08 Mrd km/h)

Astronomy

Our Solar System

During the lifetime of Fritz Zwicky ...

... the Moon has orbited Earth 1.016 times.
... Mercury has orbited Sun 315,47 times.
... Venus has orbited Sun 123,51 times.
... Earth has orbited Sun 75,98 times.
... Mars has orbited Sun 40,40 times.
... Jupiter has orbited Sun 6,41 times.
... Saturn has orbited Sun 2,58 times.
... Uranus has orbited Sun 0,90 times.
... Neptune has orbited Sun 0,46 times.
... Pluto has orbited Sun 0,31 times.

Special birthdays

Next major birthday for Fritz Zwicky would be: Monday, 14.02.2028 (130 years)

Birthday Year Weekday Date Candles blown
10. 1908 Friday February 14, 1908 55
18. 1916 Monday February 14, 1916 171
20. 1918 Thursday February 14, 1918 210
25. 1923 Wednesday February 14, 1923 325
30. 1928 Tuesday February 14, 1928 465
40. 1938 Monday February 14, 1938 820
50. 1948 Saturday February 14, 1948 1275
60. 1958 Friday February 14, 1958 1830
70. 1968 Wednesday February 14, 1968 2485
80. 1978 Tuesday February 14, 1978 3240
90. 1988 Sunday February 14, 1988 4095
100. 1998 Saturday February 14, 1998 5050
110. 2008 Thursday February 14, 2008 6105
120. 2018 Wednesday February 14, 2018 7260
130. 2028 Monday February 14, 2028 8515
140. 2038 Sunday February 14, 2038 9870
150. 2048 Friday February 14, 2048 11325
---

Birthday in numbers

Other Number systems

Decimal:
14 • 2 • 1898
Binary:
1110 • 10 • 11101101010
Hexadecimal:
e • 2 • 76a
Octal:
16 • 2 • 3552
Roman:
XIV • II • MDCCCXCVIII
Morsecode:
·−−−− ····− ·−·−·− −−−−− ··−−− ·−·−·− ·−−−− −−−·· −−−−· −−−··
Numbers to letters:
be • ac • biji
Cross sum:
33
Factor product:
53144
Birthday in words:
fourteen • two • one thousand eight hundred ninety eight

Historical Events

How old was Fritz Zwicky back then?

Als Baby (0-2 Jahre)

April 21, 1898
Spanish–American War (Age: 0 years and 2 months) 🔗
May 29, 1899
Hague Convention (Age: 1 years and 3 months) 🔗

Als Erwachsener 20-30 Jahre

January 16, 1920
Prohibition begins in the United States with the 18th Amendment, banning the manufacture, sale, and transport of alcoholic beverages. (Age: 21 years and 11 months) 🔗
August 18, 1920
The 19th Amendment is ratified, granting women the right to vote across the United States. (Age: 22 years and 6 months) 🔗
March 12, 1921
The Soviet Union adopts the New Economic Policy (NEP), allowing some private enterprise to boost the post-war economy. (Age: 23 years and 0 months) 🔗
February 28, 1922
The United Kingdom unilaterally declares Egypt independent, ending the British protectorate. (Age: 24 years and 0 months) 🔗
October 28, 1922
Benito Mussolini and his Fascist party seize power in Italy following the March on Rome. (Age: 24 years and 8 months) 🔗
November 4, 1922
Howard Carter discovers the tomb of Tutankhamun in Egypt's Valley of the Kings, sparking a global frenzy for archaeology. (Age: 24 years and 8 months) 🔗
December 30, 1922
The Union of Soviet Socialist Republics (USSR) is officially established. (Age: 24 years and 10 months) 🔗
October 29, 1923
The Republic of Turkey is proclaimed by Mustafa Kemal Atatürk, marking the end of the Ottoman Empire. (Age: 25 years and 8 months) 🔗
January 21, 1924
Vladimir Lenin, the leader of the Bolshevik Revolution and first head of the Soviet Union, dies. (Age: 25 years and 11 months) 🔗
January 24, 1924
The first Winter Olympics take place in Chamonix, France, establishing a new tradition in international sport. (Age: 25 years and 11 months) 🔗

Als Erwachsener 30-40 Jahre

August 27, 1928
The Kellogg–Briand Pact is signed, in which 62 nations agree to renounce war as an instrument of national policy. (Age: 30 years and 6 months) 🔗
September 3, 1928
Scottish physician Alexander Fleming discovers penicillin, marking the beginning of the antibiotic age. (Age: 30 years and 6 months) 🔗
October 24, 1929
Black Thursday, the first major crash of the U.S. stock market, heralds the start of the Great Depression. (Age: 31 years and 8 months) 🔗
January 26, 1930
The Salt Satyagraha begins: Mahatma Gandhi begins a 240-mile march to protest the British salt tax in India. (Age: 31 years and 11 months) 🔗
March 13, 1930
The planet Pluto is officially discovered by astronomer Clyde Tombaugh at the Lowell Observatory. (Age: 32 years and 0 months) 🔗
September 18, 1931
The Mukden Incident provides the pretext for Japan's invasion of Manchuria, China, marking a key step toward World War II. (Age: 33 years and 7 months) 🔗
May 20, 1932
Amelia Earhart begins her solo non-stop transatlantic flight, becoming the first woman to achieve this feat. (Age: 34 years and 3 months) 🔗
January 30, 1933
Adolf Hitler is appointed Chancellor of Germany, leading to the rapid consolidation of Nazi power and the end of the Weimar Republic. (Age: 34 years and 11 months) 🔗
March 4, 1933
Franklin D. Roosevelt is inaugurated as U.S. President and begins his "First Hundred Days," launching the New Deal program. (Age: 35 years and 0 months) 🔗
January 19, 1934
The discovery of artificial radioactivity by Irène and Frédéric Joliot-Curie is announced, leading to their Nobel Prize. (Age: 35 years and 11 months) 🔗

Als Erwachsener 40-50 Jahre

March 12, 1938
The Anschluss: Nazi Germany annexes Austria, violating the Treaty of Versailles. (Age: 40 years and 0 months) 🔗
September 30, 1938
The Munich Agreement is signed, allowing Germany to annex the Sudetenland in Czechoslovakia, an act of appeasement that failed to prevent war. (Age: 40 years and 7 months) 🔗
November 9, 1938
Kristallnacht (Night of Broken Glass) occurs, a coordinated series of violent pogroms against Jews throughout Nazi Germany. (Age: 40 years and 8 months) 🔗
January 5, 1939
The German V-2 rocket program begins under Wernher von Braun, laying the groundwork for later space exploration. (Age: 40 years and 10 months) 🔗
August 23, 1939
The Molotov–Ribbentrop Pact is signed, a non-aggression treaty between Nazi Germany and the Soviet Union, secretly dividing Eastern Europe. (Age: 41 years and 6 months) 🔗
September 1, 1939
Germany invades Poland, officially starting World War II in Europe. (Age: 41 years and 6 months) 🔗
May 10, 1940
Germany launches its invasion of France, Belgium, Luxembourg, and the Netherlands, initiating the Battle of France. (Age: 42 years and 2 months) 🔗
August 13, 1940
The Battle of Britain begins, a large-scale aerial conflict where the Royal Air Force defends the UK against the German Luftwaffe. (Age: 42 years and 5 months) 🔗
June 22, 1941
Germany launches Operation Barbarossa, the invasion of the Soviet Union, opening the Eastern Front. (Age: 43 years and 4 months) 🔗
December 7, 1941
Japan attacks the U.S. naval base at Pearl Harbor, prompting the United States to formally enter World War II. (Age: 43 years and 9 months) 🔗

Als Erwachsener 50-60 Jahre

May 14, 1948
The State of Israel is formally established, leading immediately to the 1948 Arab–Israeli War. (Age: 50 years and 3 months) 🔗
April 4, 1949
The North Atlantic Treaty Organization (NATO) is established as a system of collective defense against Soviet expansion. (Age: 51 years and 1 months) 🔗
October 1, 1949
Mao Zedong proclaims the establishment of the People's Republic of China (PRC), following the Chinese Civil War. (Age: 51 years and 7 months) 🔗
June 25, 1950
North Korea invades South Korea, starting the Korean War, a major conflict of the Cold War era. (Age: 52 years and 4 months) 🔗
March 29, 1951
The 22nd Amendment to the U.S. Constitution is ratified, limiting the U.S. President to two terms. (Age: 53 years and 1 months) 🔗
February 6, 1952
Elizabeth II ascends to the throne upon the death of her father, King George VI. (Age: 53 years and 11 months) 🔗
April 25, 1953
James Watson and Francis Crick publish their paper describing the double helix structure of DNA, a monumental discovery in biology. (Age: 55 years and 2 months) 🔗
June 17, 1953
The Uprising of 1953 in East Germany occurs, where protests against economic policy are suppressed by Soviet troops. (Age: 55 years and 4 months) 🔗
June 18, 1953
Egypt is declared a republic, ending the Muhammad Ali dynasty. (Age: 55 years and 4 months) 🔗
May 17, 1954
The U.S. Supreme Court rules in Brown v. Board of Education, declaring state-sponsored segregation in public schools unconstitutional. (Age: 56 years and 3 months) 🔗

Als Erwachsener 60-70 Jahre

March 27, 1958
Nikita Khrushchev becomes Premier of the Soviet Union, consolidating power and leading the nation through the height of the Cold War. (Age: 60 years and 1 months) 🔗
January 1, 1959
Fidel Castro's forces overthrow the dictatorship of Fulgencio Batista, concluding the Cuban Revolution. (Age: 60 years and 10 months) 🔗
February 3, 1959
Rock and roll stars Buddy Holly, Ritchie Valens, and The Big Bopper die in a plane crash, an event later known as "The Day the Music Died." (Age: 60 years and 11 months) 🔗
July 24, 1959
The "Kitchen Debate" between U.S. Vice President Richard Nixon and Soviet leader Nikita Khrushchev takes place in Moscow. (Age: 61 years and 5 months) 🔗
October 21, 1959
The Guggenheim Museum, designed by Frank Lloyd Wright, opens in New York City, becoming an iconic work of modern architecture. (Age: 61 years and 8 months) 🔗
February 1, 1960
The Greensboro sit-ins begin in North Carolina, marking a major turning point in the U.S. Civil Rights Movement. (Age: 61 years and 11 months) 🔗
July 1, 1960
Ghana becomes a republic, with Kwame Nkrumah as its first president. (Age: 62 years and 4 months) 🔗
April 12, 1961
Yuri Gagarin becomes the first human to travel into outer space and orbit the Earth. (Age: 63 years and 1 months) 🔗
August 13, 1961
East Germany begins construction of the Berlin Wall, dividing East and West Berlin and symbolizing the Cold War. (Age: 63 years and 5 months) 🔗
October 16, 1962
The Cuban Missile Crisis begins, bringing the United States and the Soviet Union to the brink of nuclear war. (Age: 64 years and 8 months) 🔗

Als Erwachsener 70-80 Jahre

April 4, 1968
Martin Luther King Jr. is assassinated in Memphis, Tennessee, leading to riots in many U.S. cities. (Age: 70 years and 1 months) 🔗
August 20, 1968
Warsaw Pact troops invade Czechoslovakia to halt the liberal reforms of the Prague Spring. (Age: 70 years and 6 months) 🔗
July 3, 1969
Brian Jones, founding member of The Rolling Stones, dies just a month after leaving the band. (Age: 71 years and 4 months) 🔗
July 20, 1969
The Apollo 11 mission successfully lands on the Moon; Neil Armstrong and Buzz Aldrin become the first humans to walk on an extraterrestrial body. (Age: 71 years and 5 months) 🔗
August 15, 1969
The Woodstock Festival begins in Bethel, New York, becoming a defining moment for the counterculture generation. (Age: 71 years and 6 months) 🔗
October 29, 1969
The first message is sent over ARPANET, the precursor to the Internet, between UCLA and Stanford Research Institute. (Age: 71 years and 8 months) 🔗
April 17, 1970
The Apollo 13 mission safely returns to Earth after an oxygen tank explosion forced the crew to abort a moon landing. (Age: 72 years and 2 months) 🔗
June 21, 1970
Brazil wins the FIFA World Cup, permanently keeping the Jules Rimet trophy after their third victory. (Age: 72 years and 4 months) 🔗
January 2, 1971
The Public Health Cigarette Smoking Act is passed in the US, banning cigarette advertising on television and radio. (Age: 72 years and 10 months) 🔗
August 15, 1971
U.S. President Richard Nixon ends the convertibility of the US dollar to gold, effectively ending the Bretton Woods system. (Age: 73 years and 6 months) 🔗

Birthday-FAQ for Fritz Zwicky

Frequently asked questions

How many birthday candles did Fritz Zwicky blow out so far?

» At 75 years, Fritz Zwicky has already blown out 2850 birthday candles, if you add up all the birthdays.

When will Fritz Zwicky be twice as old as today?

» Fritz Zwicky ist 27.752 days old today. On 01.02.2050 Fritz Zwicky will be twice as old as today. Fritz Zwicky will then be 151 Jahre und 11 Monate years old.

When will Fritz Zwicky be half as old as today?

» On 12.02.1936 Fritz Zwicky was half of age today. Back then Fritz Zwicky were 37 Jahre und 11 Monate years old.

When was Fritz Zwicky conceived? - Time of your conception

» That's an interesting question. Let's try it this way: A pregnancy lasts an average of 268 days. If we subtract 268 days from the day of your birth (22.05.1897), we get the 22.05.1897. However, this statement is not very meaningful, since only 3% of pregnant women actually give birth after 268 days. Most pregnant women give birth within a time window of 10 days from the actual due date. Therefore, Fritz Zwicky were conceived between 12.05.1897 and 01.06.1897.

How many prime number birthdays has Fritz Zwicky had so far?

» At 75 years old, Fritz Zwicky has already celebrated 21 prime number birthdays (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73).

How many special birthdays have I had so far?

» At 75 years, you've already celebrated 6 special number birthdays (11, 22, 33, 44, 55, 66). To be able to celebrate 10 special number birthdays, you have to live to be 111. But you still have some time until then. You'll celebrate your 111th birthday on 14.02.2009. You can find out more on the page with all birthdays.

How old was Fritz Zwicky at the turn of the millennium in 2000?

» Fritz Zwicky was born exactly 37210 days before the turn of the millennium in January 1, 2000. At that time, Fritz Zwicky was 101 years and 10 months old.

Oldest person in the world

Fritz Zwicky is currently 47 years younger (44699 days) than the officially oldest person in the world, the Frenchwoman Jeanne Calment. She was born on February 21, 1875 and died on August 4, 1997 at the age of 122 years and 164 days.

Fritz Zwicky has lived 8684 days longer than he/she was dead.

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Disclaimer

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