L. Kaltenegger et al 2021 AJ 161 233
TESS primary mission data — the first two years of observations— includes 4,239 stars within 210 pc that TESS observed long enough to see three transits of an exoplanet that receives similar irradiation to Earth.
Carly J. A. Howett et al 2021 Planet. Sci. J. 2 75
Persephone is a NASA concept mission study that addresses key questions raised by New Horizons’ encounters with Kuiper Belt objects, including: Does Pluto have a subsurface ocean?
Seth J. Kimbrell et al 2021 ApJ 911 134
A study of a 41 dwarf galaxies hosting active massive black holes using Hubble observations demonstrates that these galaxies span a wide range of morphologies, including both regular and irregular dwarf galaxies.
Anirudh Chiti et al 2021 ApJL 911 L23
A new map of the ancient, metal-poor Milky Way has been produced using 10,000 metal-poor giant stars; results indicate that extremely and very metal-poor stars can be found in every galactic component.
Csilla E. Kalup et al 2021 ApJS 254 7
Kepler K2 measurements of 101 Jovian Trojan asteroids show a rotation dichotomy with separation at ~100 hrs and low densities that support an outer solar system origin for this asteroid population.
Thomas Connor et al 2021 ApJ 911 120
Deep Chandra observations of PSO J352.4034−15.3373, a quasar at z = 5.831 that is one of the radio-loudest quasars in the early universe, revealed a structure that may represent the most distant quasar jet yet seen in X-rays.