It’s a new planet! It’s an unknown star! It’s — oops!

Questions raised about claims of two new massive objects orbiting in our solar system

Alpha Centauri

FAKE OUT  An unexpected source of radio waves (U) wanders by two members of the triple star system Alpha Centauri (A and B) in these images from the ALMA telescope. These signals are probably not coming from new planets, astronomers say.

R. Liseau et al/arXiv.org 2015, ALMA 

Reports of large, previously unknown planets wandering through the outer solar system have been exaggerated.