On one of the most memorable days of Jack Burns’s illustrious career in astronomy, he found himself on a beach in Maui. Despite the demands of orbital dynamics and launch schedules, Burns was unable to attend the long-awaited launch of the Odysseus lander by private aerospace company Intuitive Machines. While vacationing in Maui to celebrate his successful cancer treatment, Burns tuned in to a live feed from mission control as the Odysseus lander made history by becoming the first commercial spacecraft to land on the moon.
The mission carried an instrument that Burns had helped design, the Radio wave Observation at the Lunar Surface of the photoElectron Sheath (ROLSES) experiment, which consisted of an array of four antennas designed to listen for radio waves at the lunar surface. Despite a minor setback that caused the lander to tip over upon landing, the ROLSES experiment managed to capture valuable data for 25 minutes. This marked the beginning of a new era in radio astronomy on the moon, a significant milestone in Burns’s career and a promising development for the field of cosmology.
The data collected by the ROLSES experiment, albeit brief, holds the potential to pave the way for the creation of a full lunar radio observatory. Such a facility could enable scientists to peer back in time to the cosmic dark ages, a period before the formation of galaxies or stars, when only electrons orbited hydrogen atoms. By studying the faint, long-wavelength radiation from this era, researchers hope to gain a deeper understanding of the origins of the universe and the processes that shaped it into its current state.
While the cosmic dark ages remain largely uncharted territory, ongoing and upcoming missions are poised to shed light on this enigmatic period. The Lunar Surface Electromagnetics Experiment, scheduled to land on the moon in 2026, will conduct low-frequency radio astronomy to further investigate the cosmic dawn. These missions, along with a dozen others based on Earth’s most remote locations, aim to unravel the mysteries of the dark ages and illuminate the transition to cosmic dawn.
The quest to understand the cosmic dark ages and cosmic dawn poses numerous challenges and unanswered questions for astrophysicists. How did the first stars form? Did galaxies undergo rapid bursts of star formation? Was there a period of fluctuating brightness known as “disco reionization”? These are just a few of the mysteries that researchers hope to unravel through observations of the early universe.
By studying the faint glow of the hydrogen spin-flip transition, astronomers can potentially map the evolution of the universe from its inception to the present day. This elusive signal, emitted by neutral hydrogen atoms during the cosmic dark ages, offers a glimpse into the properties of the first stars and the conditions of the early universe. While detecting this signal remains a formidable challenge, advancements in radio astronomy technology hold the promise of unlocking the secrets of the cosmic dawn.
For astronomers like Jack Burns, the dream of establishing a lunar radio telescope has been decades in the making. With plans for future missions to the moon and the development of advanced cosmology instruments, the quest to uncover the mysteries of the cosmic dark ages is gaining momentum. As the torch is passed to a new generation of scientists, the journey of discovery continues, fueled by the passion and dedication of those who seek to unravel the secrets of the universe.
