Zhi-Song Zhang et al 2020 ApJ 891 174
The first Search for Extraterrestrial Intelligence (SETI) observations have been conducted with China’s Five-hundred-meter Aperture Spherical radio Telescope (FAST), validating instrumentation techniques.
Marc W. Buie et al 2020 AJ 159 130
Four stellar occultations by (486958) Arrokoth, the flyby target of the New Horizons extended mission, more precisely constrain its shape and position and find no presence of rings or other debris around it.
Yi-Han Wang et al 2020 ApJL 891 L14
Simulations show that giant planets born around a typical Sun-like star could be exchanged during a dynamical interaction with a flyby low-mass star, resulting in a tight orbit of the planet around the low-mass star.
Scott G. Carlsten et al 2020 ApJ 891 144
An extensive search for dwarf satellite galaxies around 10 primary host galaxies in the Local Volume (<12 Mpc) using archival CFHT/MegaCam imaging data revealed 155 candidates, of which 93 are new.
E. Altamura et al 2020 AJ 159 122
Two quasars have been serendipitously discovered just 76 kpc apart; they are confirmed to lie at the same redshift and appear to represent a small-separation physical quasar binary.
S. Abdollahi et al 2020 ApJS 247 33
The fourth Fermi Large Area Telescope catalog (4FGL) of gamma-ray sources, based on 8 years of Fermi data, is the deepest yet in the 50 MeV – 1 TeV energy range and contains 5,064 sources above 4σ significance.