https://www.eso.org/public/outreach/eduoff/vt-2004/Education/edu1app5.html
Me:
"When was the last known event?"
Gpt Search + Reason :
Based on observational data and studies of Venus’s repeating 8‐year synodic cycle (often illustrated as a pentagram of Venus), one set of key markers is defined by successive special positions (often the inferior conjunctions or other reference points such as greatest elongations). For example, in one commonly referenced sequence the following events were noted:
• March 25, 2017
• October 26, 2018
• June 3, 2020
• January 9, 2022
• August 13, 2023
In this series the cycle “completes” one full petal of the pentagram with the last event of this five‐step sequence occurring on August 13, 2023. In other words, when Venus was observed from Earth, it returned very nearly to its starting position (within about 2°), and the relative positions of Venus, the Sun, the Earth, and the stars repeated.
Thus, the last known event in the cycle—as measured by one common method (using a specific reference point such as the inferior conjunction or the moment corresponding to the “petal‐completion” in the pentagram pattern)—occurred on August 13, 2023.
Keep in mind that different sources may choose slightly different “marker” points within Venus’s synodic cycle (for example, using either inferior conjunctions, superior conjunctions, or points of maximum elongation), but many widely referenced studies (such as the EarthSky article by Guy Ottewell) indicate that the series of five key events culminated most recently on August 13, 2023.
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