October 2024 Skywatching Tips: Comets, Planets, and Moon Phases Explained
October offers a fascinating opportunity for skywatchers with a new comet making its appearance and several planets visible throughout the month. A particularly intriguing comet, known as C/2023 A3 (Tsuchinshan-ATLAS), will grace the evening skies after October 14. It remains to be seen whether it will be the brightest comet of the year, as it could become visible to the naked eye under the right conditions.
Key Planetary Events for October
October is also packed with planetary observations. Venus can be seen low in the western sky just after sunset. Saturn is visible in the southeast as soon as darkness falls, while Mars and Jupiter rise later in the evening. Mars appears around midnight, climbing high in the sky by dawn, and Jupiter can be seen rising earlier as the month progresses. These planets provide ideal viewing opportunities throughout the month for both seasoned astronomers and casual stargazers.
Europa and NASA’s Mission
NASA is set to launch its latest mission to one of Jupiter’s moons, Europa, as early as October 10. The Europa Clipper mission aims to study this moon, believed to have a vast ocean beneath its icy surface, in a bid to understand if it could harbour life. This marks the first mission dedicated to exploring an ocean world outside Earth, and it’s an exciting step forward in space exploration. For those interested in spotting Europa, the moon will be visible on October 11 and 25, when it is furthest from Jupiter and can be seen clearly with binoculars.
Comet C/2023 A3: A Chance to Witness History
From October 14 to 31, skywatchers will have the chance to spot Comet C/2023 A3 as it appears low in the western sky following sunset. If the comet’s tail is illuminated well by sunlight, it may become visible to the naked eye, particularly in the early evening between October 14 and 24. This comet, which has been travelling through the inner solar system, presents a rare sight as it journeys on an 80,000-year orbit from the Oort Cloud. Observers are encouraged to use binoculars or a small telescope for the best views.
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Bronze statues, including depictions of snakes and a child priest, have been uncovered from a hot spring at San Casciano dei Bagni in Italy, according to the Italian Ministry of Culture, as per reports. The site, located around 120 kilometres northwest of Rome, has been excavated since 2019 and is believed to have been used for sacred rituals dating back to the third century B.C. The spring, originally used by the Etruscans and later adopted by the Romans, was a place where votive offerings were made in hopes of divine protection or healing, as per reports.
Discovery of Snake Statues and Other Artefacts
Bronze snake statues, some measuring up to 90 centimetres in length, were among the latest findings during the 2024 excavation, as reported by the excavation team. These statues were discovered in the deeper layers of the spring and are thought to have symbolised protection for the sacred waters. Other artefacts include a nude male figure inscribed with the name “Gaius Roscius” and a child priest holding a ball, which may have been used in divination rituals.
Preserved Organic Remains Found
The excavation also revealed well-preserved organic remains, such as eggs with visible yolks, pine cones, and plant matter. According to the Italian Ministry of Culture, in a statement, these items may have been used in rituals symbolising rebirth and regeneration. The preservation of these items is attributed to their rapid burial in sediment.
Expert Perspective
Alexandra Carpino, an art history professor at Northern Arizona University, commented in an email to Live Science that these findings are among the most significant discoveries of the 21st century. The range of artefacts provides insights into the role of healing sanctuaries in ancient societies.
Ongoing Research at the Site
Research continues at San Casciano dei Bagni, with scholars examining the inscriptions and artefacts to uncover more about the Etruscan and Roman use of the spring.
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A new pulsar, PSR J1922+37, has been discovered with a spin period of 1.92 seconds using the Five-hundred-metre Aperture Spherical Radio Telescope (FAST) in China, according to a report. The finding was made in the direction of the open cluster NGC 6791. If confirmed as a member of this cluster, it would be the first pulsar identified in an open cluster, a breakthrough in pulsar and stellar cluster research, according to sources.
Key Details of PSR J1922+37
The finding was reported in a paper published Dec. 11 on the arXiv preprint server. As per reports, the pulsar PSR J1922+37 has been observed with a dispersion measure of 85 pc/cm³ and a flux density of approximately 7.0 µJy. Its position aligns closely with the location of NGC 6791, with an offset of 14 arcminutes from the cluster’s centre. The estimated distance of the pulsar, 15,600 light-years, is consistent with the cluster’s distance range, which is calculated to be between 13,100 and 16,000 light-years.
According to the study, led by Xiao-Jin Liu of Beijing Normal University, the dense stellar environment of NGC 6791 increases the likelihood of pulsars being present within the cluster. Researchers have suggested that precise measurements of PSR J1922+37’s distance and proper motion will be necessary to confirm its association with NGC 6791.
Potential for Further Discoveries
The researchers indicated that NGC 6791’s compact and high surface brightness environment could host additional pulsars. An estimate provided in the study predicts that as many as nine pulsars may exist within this cluster. The team noted that further observations using advanced techniques could help verify these predictions.
The report further highlights that the discovery has been described as a significant development in the understanding of pulsars within open clusters, an area of study previously limited due to low stellar density in such regions. Verification of PSR J1922+37’s cluster membership will require additional studies, including proper motion analysis to establish a definitive connection.
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