Template:Selected anniversaries/July 25: Difference between revisions
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File:Viking orbiter.jpg|link=Viking 2 (nonfiction)|1976: Viking program: The [[Viking 2 (nonfiction)|Viking 2]] orbiter is turned off after returning almost 16,000 images in about 700–706 orbits around [[Mars (nonfiction)|Mars]]. | File:Viking orbiter.jpg|link=Viking 2 (nonfiction)|1976: Viking program: The [[Viking 2 (nonfiction)|Viking 2]] orbiter is turned off after returning almost 16,000 images in about 700–706 orbits around [[Mars (nonfiction)|Mars]]. | ||
||1979: French nuclear weapons testing ... a test was conducted at half the usual depth because the nuclear device got stuck halfway down the 800 metre shaft. It was detonated and caused a large submarine landslide on the southwest rim of the atoll, causing a significant chunk of the outer slope of the atoll to break loose and causing a tsunami affecting Mururoa and injuring workers. | ||1979: French nuclear weapons testing ... a test was conducted at half the usual depth because the nuclear device got stuck halfway down the 800 metre shaft. It was detonated and caused a large submarine landslide on the southwest rim of the atoll, causing a significant chunk of the outer slope of the atoll to break loose and causing a tsunami affecting Mururoa and injuring workers. The blast caused a 2 kilometre long and 40 cm wide crack to appear on the atoll. | ||
||1984: Salyut 7 cosmonaut Svetlana Savitskaya becomes the first woman to perform a space walk. | ||1984: Salyut 7 cosmonaut Svetlana Savitskaya becomes the first woman to perform a space walk. | ||
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||2013: Hugh Huxley dies ... biologist and academic. | ||2013: Hugh Huxley dies ... biologist and academic. | ||
File:Lend a Hand.jpg|link=Lend a Hand (nonfiction)|2016: Signed first edition of ''[[Lend a Hand (nonfiction)|Lend a Hand]]'' used in [[high-energy literature]] experiment unexpectedly generates "at least | File:Lend a Hand.jpg|link=Lend a Hand (nonfiction)|2016: Signed first edition of ''[[Lend a Hand (nonfiction)|Lend a Hand]]'' used in [[high-energy literature]] experiment unexpectedly generates "at least two, probably four, and perhaps as many as eight" [[organic golems]]. | ||
File:Dennis_Paulson_of_Mars.jpg|link=Dennis Paulson of Mars|2017: ''[[Dennis Paulson of Mars]]'' observes a minute of silence in memory of the [[Viking 2 (nonfiction)|Viking 2]] orbiter, which was turned off forty-one years ago, after returning almost 16,000 images in about 700–706 orbits around [[Mars (nonfiction)|Mars]]. | File:Dennis_Paulson_of_Mars.jpg|link=Dennis Paulson of Mars|2017: ''[[Dennis Paulson of Mars]]'' observes a minute of silence in memory of the [[Viking 2 (nonfiction)|Viking 2]] orbiter, which was turned off forty-one years ago, after returning almost 16,000 images in about 700–706 orbits around [[Mars (nonfiction)|Mars]]. | ||
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Revision as of 05:30, 25 July 2019
1616: Physician, alchemist and chemist Andreas Libavius dies. He accepted the Paracelsian principle of using occult properties to explain phenomena with no apparent cause, but rejected the conclusion that a thing possessing these properties must have an astral connection to the divine.
1748: Astronomer Charles Messier's interest in astronomy is stimulated by an annular solar eclipse visible from his hometown.
1808: Mathematician Johann Benedict Listing born. He will introduce the term "topology" in a famous article published in 1847, having already used the term in correspondence some years earlier.
1837: The first commercial use of an electrical telegraph is successfully demonstrated in London by William Cooke and Charles Wheatstone.
1842: Physician and surgeon Dominique Jean Larrey dies. He was an important innovator in battlefield medicine and triage, and is often considered the first modern military surgeon.
1920: Chemist and X-ray crystallographer Rosalind Franklin born. She will make contributions to the discovery of the molecular structure of DNA (deoxyribonucleic acid).
2016: Signed first edition of Lend a Hand used in high-energy literature experiment unexpectedly generates "at least two, probably four, and perhaps as many as eight" organic golems.
2017: Dennis Paulson of Mars observes a minute of silence in memory of the Viking 2 orbiter, which was turned off forty-one years ago, after returning almost 16,000 images in about 700–706 orbits around Mars.
