Astronomers and citizen scientists uncover celestial rarity
In a groundbreaking discovery that has sent ripples through the astronomical community, NASA’s Transiting Exoplanet Survey Satellite (TESS) and artificial intelligence have uncovered a unique triple star system that shatters a 70-year-old cosmic record. This celestial trio, known as TIC 290061484, showcases an unprecedented orbital configuration that has left scientists astounded.
A cosmic dance of three
The newly discovered system consists of two inner stars locked in a tight embrace, completing an orbit around each other every 1.8 days. What makes this system truly remarkable is the presence of a third star, which circles the inner pair in a swift 25-day orbit. This outer star’s rapid revolution breaks a long-standing record set in 1956 for the shortest outer orbital period in such systems, surpassing the previous benchmark of 33 days.
Dr. Saul Rappaport, an emeritus professor at MIT who led the Visual Survey Group involved in the study, expressed his excitement about the discovery:
“It’s exciting to identify a system like this because they’re rarely found, but they may be more common than current tallies suggest.”
TESS: The cosmic detective
Launched in April 2018, NASA’s TESS has been tirelessly scanning the skies with its four high-powered cameras, primarily searching for exoplanets. However, in this instance, it was the detection of cosmic “strobe lights” that led to the extraordinary find. The nearly flat configuration of the TIC system allowed TESS to observe the intricate dance of these stars as they eclipse one another, causing distinct patterns of dimming and brightening.
The power of citizen science
The discovery highlights the invaluable contribution of citizen scientists in astronomical research. Two members of the Visual Survey Group, IA Terentev from Russia and HM Schwengeler from Switzerland, played a crucial role in examining TESS images and identifying the telltale signs of a triple star system.
Dr. Rappaport elaborated on the group’s mission:
“We’re mainly looking for signatures of compact multi-star systems, unusual pulsating stars in binary systems, and weird objects.”
A cosmic curiosity with a finite future
The TIC 290061484 system presents a fascinating celestial arrangement, with all three stars fitting within an area smaller than Mercury’s orbit around our Sun. This compact configuration has intriguing implications:
- No Planetary Formation: The tight orbits have prevented the formation of any planets within the system.
- Impending Merger: Scientists predict that in approximately 20 million years, the three stars will merge, culminating in a spectacular supernova explosion.
Implications for astronomical research
This discovery, detailed in The Astrophysical Journal, not only breaks records but also opens new avenues for understanding the formation and evolution of multi-star systems. It underscores the potential for finding more such rare configurations in our galaxy and beyond.
As astronomers continue to analyze data from TESS and other advanced telescopes, aided by the keen eyes of citizen scientists and the processing power of AI, we can expect more cosmic surprises that challenge our understanding of the universe.
