A "second sun" continues to be recorded by witnesses throughout the world as well as on astronomy observatory webcams, along with NASA's own satellite photos. NASA insists in public statements that a ‘second sun’ does not exist and is therefore no threat, yet they are warning their own staff to make preparations.
The concept of a "second sun" is often used to refer to a large unknown planetary object or an advanced unknown planet like Nibiru which is mentioned in history books.
Nibiru is a term in the Akkadian language, translating to "crossing" or "point of transition.”
Nibiru is Marduk's star. Marduk as the ruler of the cosmos made Nibiru visible and set it on his course wherein Nibiru passes by earth every 3,600 years allowing allows its sentient inhabitants to interact with humanity as defined in tablet 5 of the creation epic Enûma Eliš and described on a complete cuneiform tablet.
Whether Nibiru is a legend or not, reports of a "second sun" in the sky continue to come in.