AI Insight
TOI-2155 is a star located approximately 1,350 light-years from Earth that is slightly larger, more massive, and hotter than our Sun. The article suggests this star is associated with an "in-between" celestial object that challenges conventional astronomical classification boundaries, though the excerpt provided does not specify what this companion object is or why it defies current categorization systems. The object appears to fall into a gray area between established stellar or planetary definitions.
Why it matters
Understanding objects that fall between traditional astronomical classifications helps refine our definitions of stars, brown dwarfs, and planets, which is crucial for accurately cataloging celestial bodies and understanding stellar and planetary formation processes. This research may reveal new insights into the continuum of celestial objects rather than discrete categories.
Understand the Science
A star called TOI-2155 lies around 1,350 light-years (839 trillion miles) from Earth. It is a little bigger, heavier and hotter than the sun, and it is not particularly interesting or unusual in itself.
Source: What makes a star a star? A strange 'in‑between' celestial object is testing astronomers' boundaries