Astronomers Identify Mysterious 1408 ‘Guest Star’ That Lit the Sky for Ten Days 600 Years Ago

Ancient Chinese astronomers had recorded various celestial events that
contributed to modern astrophysics
. One such event was the Chinese guest star of 1408 CE, detailed in the documents of the Ming Dynasty. After much effort in transcribing and translating the records, the experts have finally decoded this celestial event, according to
Universe Today
. It was described as a stationary yellow object that was visible constantly for ten days. The phenomenon had the characteristics of a nova rather than a comet or meteor flashing through the sky. It had enough brightness, color stability, and a steady light curve for an extended period.

This 600-year-old mystery was a challenge to modern astronomy, and researchers from China, Germany, and Chile decoded it. “It was about the size of a cup-shaped oil lamp, with a pure yellow color, smooth and bright,” according to the ancient report to the king by Hanlin Academy scholar Hu Guang, as per the
South China Morning Post
. These details of the star’s size and brightness also helped the team to narrow down the potential
position of the star
. The researchers’ analysis led to a stellar remnant named CK Vul, situated between the modern constellations Cygnus and Vulpecula, as the most probable aftermath of the 1408 nova.

Vmeetsolutions
noted that the team of astronomers was led by Boshun Yang from the University of Science and Technology of China. They relied on the congratulatory memorial of Hu Guang for authentic information on the observation. The descriptive words like “yellow” and “lustrous,” rather than having “rays” or “spikes,” indicated an avoidance of ominous terms in royal reports. It reflected how astronomical language was influenced by political concerns while detailing important observational details, as reported by
Phys Org
. The limited terminology for colors added to the significance of its description, as it was bright enough to be seen by the officials against the sky.

The term “Zhou Bo star” was another indicative factor, as it was reserved for celestial events that were extraordinarily bright. This guest star was considered very auspicious as it was believed to appear when an emperor brought peace and harmony to the kingdom, as per
Popular Mechanics
. “Celestial omens are assumed to have been highly important; we can consider the information reliable,” Yang and his team attested. They dabbled across various events, even an extinction, which was ruled out when the ancient event was found to have been in
the centre of the sky
. The conclusion of it being a nova reflected the energy release from the pull of hydrogen and helium.

This official document from the Imperial Astronomical Bureau was authentic enough to rule out the possibility of it being a forged or misinterpreted record. This confirmation opened a window into the documentation of pre-telescopic stellar phenomena. “The 1408 even stands as one of the earliest well-documented nova candidates,” stated the team. According to
Gizmodo
, this event added to the list of ancient Chinese records corroborating modern astronomical observations. Earlier accounts were slowly becoming a reliable backdrop to drive astronomy. They somehow bridged the gap between the past and present of this dynamic field with the records left behind.