Highlights

Comet 46P/Wirtanen as viewed with the Faulkes Telescope North, Las Cumbres Observatory at Maui, Hawaii, on 9 December 2018. The green diffuse cloud is the comet’s coma – the green color being caused by carbon molecules. The reddish stripe in the lowe

Artist’s conception of the progenitor system of a Type Ia supernova. A white dwarf (tiny dot in the center of the disk at right) steals matter from a companion star (left).  When it steals too much matter, the white dwarf explodes. This supernova exp