Monday, October 27, 2025
On this date in 1780, a total solar eclipse was visible in New England. During the American Revolutionary War, the first American solar eclipse expedition was organized and sent out from Harvard College in Massachusetts. A special immunity agreement was negotiated with the British to allow the scientists to work unharmed. The Harvard expedition, after all their efforts, missed the eclipse because they chose a site outside the path of totality.
Tuesday, October 28, 2025
On this date in 1965, construction was completed on the Gateway Arch. Regular public telescope viewing opportunities are provided on the grounds of the Gateway Arch as part of the Gateway to the Stars program. The program features a free presentation by a guest speaker, followed by telescope viewing (weather permitting).
Wednesday, October 29, 2025
On this date in 1991, the space probe Galileo became the first human object to fly past an asteroid. The encounter provided data and over 150 images of the asteroid Gaspra in the main asteroid belt. Gaspra is approximately 20 kilometers wide.
Thursday, October 30, 2025
On this date in 1937, an asteroid made a close approach of Earth at a distance of about two lunar orbits. At the time, it was the closest observed approach to Earth of any asteroid. Astronomy Karl Reinmuth named the object Hermes after the herald of the Greek gods due to its fast motion.
Friday, October 31, 2025
On this date in 1956, an airplane landed at the South Pole for the first time. When Navy Admiral George J. Dufek stepped off the Que Sera Sera, an LC-47 transport plane, he was the first American to set foot on there.
Saturday, November 1, 2025
On this date in 1884, Greenwich Mean Time (GMT) was adopted universally at a meeting of the International Meridian Conference in Washington, DC, USA. From then the International Date Line was drawn up and 24 time zones were created.
Sunday, November 2, 2025
Tonight, the Moon and Saturn will make a close approach, appearing about 3 degrees apart in the evening sky. The pair will be visible in the East after sunset.
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