Matthew Hedman and Rob Chancia 2021 Planet. Sci. J. 2 107

New analysis of the highest-resolution Voyager images of Uranus’s dusty ring system reveals that a number of these rings are less than 20 km wide.

Mary E. Putman et al 2021 ApJ 913 53

Measurements of the 119 Local Group dwarf galaxies show that 53 of 55 dwarfs within the Milky Way’s virial radius are devoid of gas, and 27 of 30 beyond the virial radius are stripped as well.

Raffy Traas et al 2021 AJ 161 286

The Breakthrough Listen search for extraterrestrial intelligence is extended to include targeted searches of stars identified by TESS as potential exoplanet hosts, establishing deep limits on SETI over the 1–11 GHz band.

Guo Chen et al 2021 ApJL 913 L16

Low-resolution transmission spectra of the puffy hot Jupiter HAT-P-65b reveal evidence for titanium oxide in this planet’s relatively clear atmosphere.

Donghyeon J. Khim et al 2021 ApJS 254 27

Simulations point to 4 channels that generate misalignment of the stars and gas in galaxies: mergers (35%), interaction with nearby galaxies (23%), interaction in dense environments (21%), and secular evolution (21%).

Cristina M. Dalle Ore et al 2021 Planet. Sci. J. 2 83

Examination of the H₂O ice phase on the surface of Dione, one of Saturn’s icy satellites, supports the hypothesis that Dione might have been recently active and is still harboring a body of liquid water under its crust.