Science Updates - A look at CfA discoveries from recent journals

dwarf irregular galaxy IC1613
April 20, 2018

Astronomers studying the motions of galaxies and the character of the cosmic microwave background radiation came to realize in the last century that most of the matter in the universe was not visible. About 84% of the matter in the cosmos is dark matter, much of it located in halos around galaxies.

rtist's impression of a superluminous supernova and an associated gamma-ray burst being driven by a rapidly spinning neutron star
April 13, 2018

A "core-collapse" supernova occurs when the iron core of a massive star collapses under the force of gravity and then rebounds, generating pressure waves and shocks that propagate outward.

Chandra X-ray Observatory image of the globular cluster 47 Tucanae
April 6, 2018

Cataclysmic variable stars (CVs) are white dwarf stars that are accreting from an orbiting, low mass binary companion star. The accretion is facilitated by the proximity of the stars; typical orbital periods range from about one to ten hours.