Markus J. Aschwanden 2020 ApJ 897 16

Newly determined scaling relationships of flare properties are used to predict the upper limits of the Geostationary Orbiting Earth Satellite (GOES) fluxes of flares, improving space-weather forecasting.

Jordan K. Steckloff et al 2020 Planet. Sci. J. 1 26

Methane evaporation stratifies Titan’s lakes — which are made up of liquid methane, ethane, and nitrogen — into ethane-rich and methane-rich layers separated by a strong compositional gradient.

Klaus M. Pontoppidan et al 2020 ApJ 896 169

New near-infrared imaging of the great disk shadow in the Serpens star-forming region demonstrate strong variability of the disk shadow, revealing dynamics of the inner disk on timescales of months.

David Jewitt et al 2020 ApJL 896 L39

Hubble observations of interstellar comet 2I/Borisov reveal an outburst and splitting of the comet’s nucleus, likely ejecting one or more meter-sized boulders that nonetheless made up a small fraction of the comet’s mass.

Thomas M. Esposito et al 2020 AJ 160 24

A ~4-year direct imaging survey of 104 stars resulted in 26 debris disks and 3 protoplanetary/transitional disks being resolved in scattered light — 7 for the first time — and characterized.

V. A. Acciari et al 2020 ApJS 248 29

Observations of the TeV blazar Mrk 421 during flaring activity show energy-dependent variability on multi-hour timescales and energy-independent variability on sub-hour timescales, favoring a multi-zone scenario.