Andrew I. Hsu et al 2019 AJ 157 152

Dark vortices on Neptune are explored over 25 years of HST data, demonstrating that dark spots have average occurrence rates of one dark spot every 4–6 years, and each spot typically has a lifetime of 1–6 years.

L. Kaltenegger et al 2019 ApJL 874 L8

The TESS Habitable Zone Stars Catalog is a list of 1,822 bright nearby stars with reliable distances from Gaia DR2, around which NASA’s TESS mission can detect transiting planets that receive Earth-like irradiation.

Ying D. Liu et al 2019 ApJS 241 15

A comparative study of the 2012 July and 2017 July solar eruptions suggests that superstorms are “perfect storms” in nature, i.e., a combination of circumstances results in an event of an unusual magnitude.

Željko Ivezić et al 2019 ApJ 873 111

The Large Synoptic Survey Telescope will begin regular survey operations by 2022 and, over the nominal 10 years of observations, will produce 32 trillion observations of 20 billion galaxies and a similar number of stars.

Sean M. Mills et al 2019 AJ 157 145

A radial-velocity study is conducted for three systems (Kepler-25, -65, and -68) with similar architectures: a giant-planet companion exterior to a compact, multiply transiting system of sub-Neptune planets.

Alin Razvan Paraschiv and Alina Donea 2019 ApJ 873 110

Data analysis on penumbral geyser-like flaring structures in the Sun’s corona show that they produce recurring jets and can be long-lived, quasi-stable, and act as coronal sources for Type-III radio bursts.