An article published in “The Astrophysical Journal Letters” reports a study on the brown dwarf classified as WISEA J153429.75-104303.3, or simply WISE 1534–1043, nicknamed the Accident because it was discovered purely by chance. A team of researchers used observations conducted with various telescopes to try to understand the characteristics of a brown dwarf different from the ones already known. Its emissions are very dim making it difficult to obtain the desired information but the researchers’ conclusion is that it’s very old, with an age between 10 and 13 billion years, and passed close to much more massive objects that accelerated it until reaching the remarkable speed detected. Its relative proximity to Earth could be random or indicate that brown dwarfs of that type are more common than expected but we can’t detect them with current instruments.

An article published in the journal “Astronomy & Astrophysics” reports a study on 5 objects on the boundary between brown dwarf and star discovered thanks to NASA’s TESS space telescope. A team of researchers coordinated by a group of Swiss entities conducted follow-up observations of the 5 objects to better understand the nature of brown dwarfs, what distinguishes them from stars, and what is the boundary between these two classes of objects.