Two articles, one published in “The Astrophysical Journal Letters” and one in “The Astrophysical Journal”, report the results of studies on ancient quenching galaxies, which means that they strongly reduced or even finished their star-formation activity. Two teams of researchers with many of them in common used data collected with various telescopes to study these galaxies and establish that we see the oldest as it was about 1.5 billion years after the Big Bang. These studies offer new information to improve galaxy formation models.