Deuterons — atomic nuclei made up of a proton and a neutron — are thought to form in the same way as helium-3 nuclei, in collisions between primary helium-4 nuclei…
The icy dwarf planets Eris and Makemake have surfaces bearing methane ice of unknown origin. According to an analysis of data from the NASA/ESA/CSA James Webb Space Telescope, Eris and…