[et_pb_section fb_built=”1″ fullwidth=”on” _builder_version=”4.27.4″ background_image=”https:\/\/thesiamsociety.org\/wp-content\/uploads\/2025\/01\/Jurney-to-Southern-cover-E.jpg” locked=”off” global_colors_info=”{}”][et_pb_fullwidth_header _builder_version=”4.27.4″ background_color=”RGBA(255,255,255,0)” background_image=”https:\/\/thesiamsociety.org\/wp-content\/uploads\/2025\/05\/IMGP2823-scaled.jpg” background_size=”contain” background_repeat=”repeat” min_height=”350px” max_height=”500px” global_colors_info=”{}” background__hover_enabled=”on|desktop”][\/et_pb_fullwidth_header][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.16″ collapsed=”off” global_colors_info=”{}”][et_pb_row column_structure=”3_5,2_5″ use_custom_gutter=”on” custom_padding_last_edited=”on|tablet” _builder_version=”4.16″ custom_margin=”|auto|28px|auto|false|false” custom_padding=”0px||15px|||” custom_padding_tablet=”0px||0px||false|false” custom_padding_phone=”0px||||false|false” global_colors_info=”{}”][et_pb_column type=”3_5″ module_class=”second-on-mobile” _builder_version=”4.16″ custom_padding_tablet=”0px||||false|false” custom_padding_last_edited=”off|phone” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_blurb url=”\/lectures\/” use_icon=”on” font_icon=”H||divi||400″ icon_placement=”left” image_icon_width=”24px” _builder_version=”4.16″ body_font=”|700|||||||” link_option_url=”\/lectures\/” icon_font_size=”24px” global_colors_info=”{}” body_text_color__hover_enabled=”on|hover” body_text_color__hover=”rgba(29,39,49,0.7)”]Back to Lectures[\/et_pb_blurb][et_pb_text admin_label=”Pre-header message” _builder_version=”4.16″ _dynamic_attributes=”content” module_alignment=”center” custom_margin=”||15px||false|false” custom_css_main_element=”text-align: left;” text_text_align=”center” global_colors_info=”{}”]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoiY3VzdG9tX21ldGFfcHJlLWhlYWRlcl9tZXNzYWdlIiwic2V0dGluZ3MiOnsiYmVmb3JlIjoiIiwiYWZ0ZXIiOiIiLCJlbmFibGVfaHRtbCI6Im9uIn19@[\/et_pb_text][et_pb_text admin_label=”Lecture Topic Heading” _builder_version=”4.27.0″ _dynamic_attributes=”content” header_text_color=”#8e794c” max_width_tablet=”90%” max_width_phone=”100%” max_width_last_edited=”off|desktop” module_alignment=”center” custom_margin=”||62px|||” custom_padding=”||30px||false|false” module_alignment_last_edited=”off|tablet” custom_css_main_element=”text-align: left;” border_width_bottom=”1px” border_color_bottom=”#dbd3d8″ text_text_align=”center” global_colors_info=”{}”]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF90aXRsZSIsInNldHRpbmdzIjp7ImJlZm9yZSI6IjxoMT4iLCJhZnRlciI6IjwvaDE+In19@[\/et_pb_text][et_pb_text _builder_version=”4.27.4″ text_font=”||||||||” header_font=”||||||||” width=”100%” custom_margin=”||40px||false|false” custom_padding=”0px||||false|false” custom_padding_tablet=”50px||||false|false” custom_padding_phone=”” custom_padding_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n
Archaeoastronomy investigates how ancient people used their knowledge of stars and the sky in their culture. It is necessarily multidisciplinary, encompassing astronomy, archaeology, anthropology, history, and statistics. Many civilisations used astronomy to build their most important structures. Stonehenge and Egypt\u2019s Great Pyramid are prime examples of ancient monuments with astronomical associations. In Thailand, although east is the preferred direction for temples, many more are not perfectly aligned. Some are set to face the main transportation channels\u2014a canal or a road. Yet there are those that turn toward seemingly arbitrary directions and have been dismissed as instances of primitive engineering.<\/p>\n
The work of the History and Heritage of Astronomy Group at the National Astronomical Research Institute of Thailand (NARIT) has proven that assumption wrong. This lecture will tell you about the Group\u2019s methodology and the results of their investigation in places like Prasat Phanomrung, Prasat Phimai, and Phrat That Doi Suthep. Their collaboration with BRIN, Indonesia\u2019s National Research and Innovation Agency, yielded surprising results from Central Java\u2019s World Heritage sites, including Borobudur, Prambanan and Candi Mendut.<\/p>\n
The History and Heritage of Astronomy Group, based in Chiang Mai, has been working in many of Thailand\u2019s important ancient monuments to find out whether there are any astronomical associations in those places. After a few initial scepticisms, their papers have been published in international journals and their reputation has meant that their field trips are always oversubscribed by local students.<\/p>\n
[\/et_pb_text][et_pb_blurb title=”About the speaker” icon_placement=”left” _builder_version=”4.27.4″ header_level=”h3″ header_font=”||||||||” custom_padding=”||10px||false|false” global_colors_info=”{}”]<\/p>\n
Visanu Euarchukiati<\/strong> is an astronomy enthusiast and a science historian. He is an active member of The Siam Society and the Chairperson of the Siamese Heritage Trust Committee. He graduated with a BSc (Eng) in Computing Science from Imperial College London and an MS in Computer Science from Florida Institute of Technology. Visanu worked in IT and other managerial positions in the Shell Company of Thailand, Smart Loyalty (Thailand) and ActionAid Thailand. As an editor and author for the National Astronomical Research Institute of Thailand (NARIT), he produced a series of\u00a09\u00a0Thai books on the history of astronomy. His two papers on the observations of the total solar eclipse of\u00a06\u00a0April\u00a01875\u00a0in Siam were recently published in Exploring the History of Southeast Asian Astronomy by Springer in\u00a02021.\u00a0He appears in NARIT\u2019s video documentary commemorating the\u00a01875\u00a0eclipse, recently published online on\u00a04\u00a0April\u00a02025.\u00a0Visanu joined archaeoastronomy activities as an advisor for text, photography and video for NARIT\u2019s History and Heritage of Astronomy Group.<\/p>\n [\/et_pb_blurb][\/et_pb_column][et_pb_column type=”2_5″ module_class=”first-on-mobile” _builder_version=”4.16″ background_color=”#4e4e4d” custom_padding=”40px|40px|40px|40px|true|true” custom_padding_tablet=”” custom_padding_phone=”|40px||40px|true|true” custom_padding_last_edited=”on|phone” custom_css_main_element=”margin-bottom: 50px;” border_width_top=”4px” border_color_top=”#8e794c” border_width_bottom=”2px” border_color_bottom=”#8e794c” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_blurb title=”When” icon_placement=”left” _builder_version=”4.27.4″ header_level=”h3″ header_font=”||||||||” background_layout=”dark” custom_padding=”||0px||false|false” global_colors_info=”{}”]<\/p>\n Thursday, 12 June 2025 at 19:00<\/p>\n [\/et_pb_blurb][et_pb_blurb title=”Where” icon_placement=”left” _builder_version=”4.25.1″ _dynamic_attributes=”content” header_level=”h3″ header_font=”||||||||” background_layout=”dark” custom_padding=”||10px||false|false” global_colors_info=”{}”]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoiY3VzdG9tX21ldGFfbGVjdHVyZV9sb2NhdGlvbiIsInNldHRpbmdzIjp7ImJlZm9yZSI6IiIsImFmdGVyIjoiIiwiZW5hYmxlX2h0bWwiOiJvbiJ9fQ==@[\/et_pb_blurb][et_pb_blurb title=”Admission” icon_placement=”left” _builder_version=”4.25.1″ _dynamic_attributes=”content” header_level=”h3″ header_font=”||||||||” background_layout=”dark” custom_padding=”||10px||false|false” global_colors_info=”{}”]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoiY3VzdG9tX21ldGFfYWRtaXNzaW9uIiwic2V0dGluZ3MiOnsiYmVmb3JlIjoiIiwiYWZ0ZXIiOiIiLCJlbmFibGVfaHRtbCI6Im9uIn19@[\/et_pb_blurb][et_pb_blurb title=”For more information, please contact” icon_placement=”left” module_class=”contact-on-dark” _builder_version=”4.25.1″ _dynamic_attributes=”content” header_level=”h3″ header_font=”||||||||” background_layout=”dark” custom_padding=”||10px||false|false” global_colors_info=”{}” body_link_text_color__hover_enabled=”off” body_link_text_color__hover=”#81bbc3″]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoiY3VzdG9tX21ldGFfbGVjdHVyZV9lbnF1aXJ5X2NvbnRhY3QiLCJzZXR0aW5ncyI6eyJiZWZvcmUiOiIiLCJhZnRlciI6IiIsImVuYWJsZV9odG1sIjoib24ifX0=@[\/et_pb_blurb][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Section” _builder_version=”4.25.1″ background_color=”#eff1f3″ custom_margin=”||-27px||false|false” custom_margin_tablet=”” custom_margin_phone=”” custom_margin_last_edited=”on|phone” locked=”off” global_colors_info=”{}”][et_pb_row use_custom_gutter=”on” gutter_width=”2″ disabled_on=”off|off|off” admin_label=”More Upcoming Trips” _builder_version=”4.25.1″ custom_padding=”23px||31px||false|” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.25.1″ text_font=”||||||||” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][et_pb_code _builder_version=”4.25.1″ global_colors_info=”{}”]More upcoming lectures<\/h2>\n