In the heart of Victoria, Australia, Chris Stockdale has turned his passion for astronomy into a remarkable journey of discovery, making significant contributions to the field from his modest backyard observatory. With a telescope finely attuned to track celestial bodies, Stockdale has successfully identified over 100 exoplanets, much to the amazement of both the amateur and professional astronomical communities.
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Stockdale’s fascination with the cosmos took root in the 1960s, spurred on by the iconic Apollo programme and the thrilling experience of viewing comets with his father. “The Moon landings stirred my interest deeply, and I fondly remember early mornings spent marveling at comets,” he reminisced. This early exposure to astronomy ignited a lifelong passion that would lead him to build his own observatory and delve into astronomical research.
The process by which Stockdale uncovers exoplanets involves meticulous observations of stars outside our solar system. According to NASA, as of April 2026, there are 6,158 confirmed exoplanets, all of which orbit other stars. Stockdale employs sophisticated techniques to detect minute changes in a star’s brightness; notably, a temporary dimming, typically between 0.5% and 1%, indicates the presence of a planet when it transits in front of the star. “It’s all about identifying the specific star that causes the light dip, and ruling out other potential explanations,” he noted, demonstrating a commitment to precision in his work.
His adept analysis allows him to discern genuine exoplanet candidates from other astronomical phenomena, such as eclipsing binaries—two stars whose brightness may fluctuate due to their orbital dynamics. “It requires a keen eye and a lot of data analysis to tease out the exact source of the dip, but that’s where the excitement lies,” Stockdale explained.
A long-standing member of the Latrobe Valley Astronomical Society since 1971, Stockdale constructed his first observatory in 1992, marking the beginning of an enduring commitment to astronomy. He upgraded his telescope equipment and observatory structure in 2013, opting for a Sirius dome to enhance his stargazing capabilities and research potential.
His unwavering dedication to uncovering the mysteries of the universe has not gone unnoticed. Recently, he was awarded the prestigious 2026 Berenice and Arthur Page Medal by the Astronomical Society of Australia (ASA), an accolade that recognises outstanding contributions to the field by amateur astronomers. “I felt incredibly proud and honoured to receive this recognition,” Stockdale remarked, highlighting the significance of the award in acknowledging amateur work in science.
Dr. Tanya Hill, an astronomer at Melbourne’s Scienceworks and an ASA representative, spoke highly of Stockdale’s achievements. “Amateur astronomers play a crucial role in the field, and this medal serves to celebrate their contributions. The committee was particularly impressed by the endorsements he received from professional astronomers with whom he collaborated,” she shared.
Stockdale’s achievements not only underscore the value of amateur contributions to astronomical research but also inspire others to engage with the universe from their own backyards. His ability to leverage relatively simple equipment for profound discoveries demonstrates that with passion and determination, significant strides can be made even outside mainstream scientific institutions.
As Stockdale continues his work, the excitement of discovery propels him forward. His journey stands as a testament to the powerful connection between curiosity, education, and the pursuit of knowledge, inviting others to look up at the stars and consider what lies beyond our planet.