Precise projected obliquity measurements. Here we highlight the most precise (σ_λ < 2°) measurements of λ for systems with cool stellar hosts (T_eff < 6100 K). WASP-50 is highlighted with a black center. The color-coding is done according to T_eff and the marker sizes scale with the tidal alignment timescale (as given by Zahn 1977). The gray shaded area shows the Gaussian distribution inferred from cool hosts (T_eff < 6100 K) with close-in (a/R_★ < 10), massive (M_p < 0.3 M_J) planets. The horizontal lines demarcate the Solar System obliquity of 7.155° (Beck & Giles 2005). The light gray error bars show the less precise measurements. Adapted from Albrecht et al. (2022, Figure 10).