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Alfred Rényi died, 1970 (b. 1921).
Alfred Rényi died, 1970 (b. 1921).
Feb 1 all-day
Alfred Rényi died, 1970 (b. 1921).
Alfréd Rényi (20 March 1921 – 1 February 1970) was a Hungarian mathematician who made contributions in combinatorics, graph theory, number theory but mostly in probability theory.
2
Bertrand Russell died, 1970 (b. 1872).
Bertrand Russell died, 1970 (b. 1872).
Feb 2 all-day
Bertrand Russell died, 1970 (b. 1872).
Bertrand Arthur William Russell, 3rd Earl Russell, OM FRS (/ˈrʌsəl/; 18 May 1872 – 2 February 1970) was a British philosopher, logician, mathematician, historian, writer, essayist, social critic, political activist, and Nobel laureate. At various points in his life, Russell considered himself a liberal, a socialistand a pacifist, although he Continue reading →
Presentation of the Lord (Candlemas).
Presentation of the Lord (Candlemas).
Feb 2 all-day
Presentation of the Lord (Candlemas).
A tapestry from Strasbourg depicting the Purification of the Virgin Mary and the Presentation of Jesus at the Temple. Candlemas (also spelled Candlemass), also known as the Feast of the Presentation of Jesus Christ and the Feast of the Purification of the Blessed Virgin Mary, Continue reading →
3
15th Amendment to the US Constitution ratified, 1870 (suffrage regardless of race).
15th Amendment to the US Constitution ratified, 1870 (suffrage regardless of race).
Feb 3 all-day
15th Amendment to the US Constitution ratified, 1870 (suffrage regardless of race).
A parade surrounded by portraits and vignettes of Black life, illustrating rights granted by the 15th amendment. Kelly, Thomas, active 1871-1874. The 15th Amendment to the U.S. Constitution granted African American men the right to vote by declaring that the Continue reading →
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Vettius Valens born, (b. 120 AD, d. 175 AD)
Vettius Valens born, (b. 120 AD, d. 175 AD)
Feb 8 all-day
Vettius Valens (February 8, 120 – c. 175) was a 2nd-century Hellenistic astrologer, a somewhat younger contemporary of Claudius Ptolemy. Valens’ major work is the Anthology (Latin: Anthologia), ten volumes in Greek written roughly within the period 150 to 175. Continue reading →
9
Full Moon (00:33 MST).
Full Moon (00:33 MST).
Feb 9 all-day
Full Moon (00:33 MST).
Full Moon. Rises at sunset, high in the sky around midnight. Visible all night. Moon overview on solarsystem.nasa.gov
US Weather Bureau established, 1870.
10
Mercury at Greatest Elongation.
Mercury at Greatest Elongation.
Feb 10 all-day
Mercury at Greatest Elongation.
This colorful view of Mercury was produced by using images from the color base map imaging campaign during MESSENGER’s primary mission. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Moon at Perigee (13:31 MST).
11
International Day of Women and Girls in Science.
International Day of Women and Girls in Science.
Feb 11 all-day
International Day of Women and Girls in Science.
Illustration of Vera Rubin from a series of illustrations for the International Day of Women and Girls in Science. Credit: BEATRIZ ARRIBAS DE FRUTOS. A significant gender gap has persisted throughout the years at all levels of science, technology, engineering Continue reading →
Mercury at Perihelion.
Mercury at Perihelion.
Feb 11 all-day
Mercury at Perihelion.
The young rays of Mena crater on Mercury contrast brightly against the surrounding surface, though the rays will gradually fade with time. Credit: NASA/JPL-Caltech.
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St Valentine’s Day.
St Valentine’s Day.
Feb 14 all-day
St Valentine’s Day.
Oil painting of St. Valentine by Leonhard Beck from around 1510. Saint Valentine (Italian: San Valentino, Latin: Valentinus) was a widely recognized 3rd-century Roman saint, commemorated in Christianity on February 14. From the High Middle Ages his Saints’ Day is associated with a tradition of courtly love. – Wikipedia
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Anniversary of the 2013 Chelyabinsk Asteroid Impact Event
Anniversary of the 2013 Chelyabinsk Asteroid Impact Event
Feb 15 all-day
Anniversary of the 2013 Chelyabinsk Asteroid Impact Event
On February 15 2013 an asteroid exploded in the sky over the city of Chelyabinsk, in the the southern Ural region of Russia. The shock wave blew out windows all over the city, injuring over 1600 people, and damaged several buildings. This event Continue reading →
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Mars at 0.8°S of Moon.
Mars at 0.8°S of Moon.
Feb 18 all-day
Mars at 0.8°S of Moon.
Conjunction of Mars and the Moon – Feb. 18, 2020. Credit: Stellarium / Bob Trembley
19
Jupiter at 0.9°N of Moon (12:36 MST).
Jupiter at 0.9°N of Moon (12:36 MST).
Feb 19 all-day
Jupiter at 0.9°N of Moon (12:36 MST).
Conjunction of Jupiter and the Moon – Feb. 19, 2020. Credit: Stellarium / Bob Trembley
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Saturn 1.7°N of Moon (06:47 MST).
Saturn 1.7°N of Moon (06:47 MST).
Feb 20 all-day
Saturn 1.7°N of Moon (06:47 MST).
Conjunction of Saturn and the Moon – Feb. 20, 2020. Credit: Stellarium / Bob Trembley
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New Moon (08:32 MST).
New Moon (08:32 MST).
Feb 23 all-day
New Moon (08:32 MST).
By the modern definition, New Moon occurs when the Moon and Sun are at the same geocentric ecliptic longitude. The part of the Moon facing us is completely in shadow then. Pictured here is the traditional New Moon, the earliest visible Continue reading →
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Mardi Gras
Mardi Gras
Feb 25 all-day
Mardi Gras
Maria M Kirch born, 1670 (d. 1720)
Maria M Kirch born, 1670 (d. 1720)
Feb 25 all-day
Maria M Kirch born, 1670 (d. 1720)
Maria Margaretha Kirch (née Winckelmann, in historic sources named Maria Margaretha Kirchin; 25 February 1670 – 29 December 1720) was a German astronomer, and one of the first famous astronomers of her period due to her writings on the conjunction Continue reading →
Mercury at Inferior Conjunction.
Mercury at Inferior Conjunction.
Feb 25 all-day
Mercury at Inferior Conjunction.
This mosaic of images from NASA’s MESSENGER spacecraft shows the impact crater Hokusai, located on Mercury at a latitude of 58°N. The crater has an impressive system of rays, which extend as much as a thousand kilometers (more than 600 Continue reading →
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NGC 3521, Bernard Miller, USA. This beautiful galaxy in a bubble is located about 26 million light years away in the constellation Leo.