Anna T. P. Schauer et al 2020 ApJ 904 145
Estimates show that, to detect Population III star formation regions at high redshift (i.e., the first stars), an infrared telescope based on the Moon would need a primary mirror of 100 m in diameter.
Jason D. Rhodes et al 2020 AJ 160 261
A logical endpoint for galaxy surveys is a 280-m telescope with a marginally resolved focal plane of 20 deg2 operating at L2, which could potentially exhaust the cosmological information content of galaxies in a 10 yr survey.
Elishevah M. M. E. van Kooten et al 2020 Planet. Sci. J. 1 67
New analysis of isotopes in lunar rocks suggest that the Moon was veiled by a thin atmosphere during mare basalt eruption events spanning at least from 3.8 to 3 billion years ago.
Dennis Zaritsky et al 2020 ApJL 905 L3
15 stars have been discovered in the H3 survey that lie, in projection, near the tip of the trailing gaseous Magellanic Stream; these likely represent debris of past Magellanic Cloud encounters.
Mireia Montes et al 2020 ApJ 904 114
Deep optical imaging of NGC 1052-DF4 has detected tidal tails in this object caused by its interaction with its neighboring galaxy NGC 1035, possibly explaining NGC 1052-DF4’s apparent dearth of dark matter.
George Younes et al 2020 ApJL 904 L21
NICER observations captured the 217 high-energy bursts emitted by magnetar SGR 1935+2154 over 1,120 seconds in April 2020, as well as the persistent emission that gradually declined over the next 40 days.