Ariel N. Deutsch et al 2021 Planet. Sci. J. 2 213
Lunar craters with stable deposits of ice tend to be smoother than those without, but it might be subsurface ice rather than visible ice that reduces the ruggedness of some craters at the Moon’s poles.
Renyi Chen et al 2021 ApJ 919 50
A new software package that describes the connection between the spins and orbits of planets has been applied to the TRAPPIST-1 system, showing how the transit times of this system will vary within the next decade.
Kenneth Houston et al 2021 AJ 162 151
The key to improved detection rates of technosignatures from extraterrestrial civilizations may lie in low-frequency radio observations made by arrays of telescopes.
Antonio Ambrosone et al 2021 ApJL 919 L32
Theorized neutrino emission from starburst galaxies is estimated to be slightly beyond the reach of current neutrino observatories, but future instruments should be able to put this theory to the test.
Jennifer B. Bergner and Fred Ciesla 2021 ApJ 919 45
Models suggest that organic molecules formed in the interstellar medium could be successfully transported to young planets via impacts by comets.
Yangping Luo et al 2021 ApJS 256 28
Categorization of hot subdwarfs — stars with temperatures similar to O and B stars but with lower masses — based on helium abundance reveals four separate stellar populations that likely have different origins.