Harvard University astronomers and Smithsonian Institution astronomers explore the cosmos together. The combination of the Harvard College Observatory (HCO) and the Smithsonian Astrophysical Observatory (SAO) is known as the Center for Astrophysics | Harvard & Smithsonian (CfA).

## News Releases

 September 20, 2019 The National Science Foundation has just announced the award of a $12.7M grant to architect and design a next-generation Event Horizon Telescope (ngEHT) to carry out a program of transformative black hole science. September 5, 2019 Event Horizon Telescope Collaboration Director Shep Doeleman of the Center for Astrophysics | Harvard & Smithsonian will accept the 2020 Breakthrough Prize in Fundamental Physics on behalf of the EHT collaboration. The$3 million prize will be shared equally with the 347 scientists co-authoring any of the six papers published by the EHT on April 10, 2019.

## Latest Science Update

September 20, 2019

Galaxies actively engaged in making stars produce many hot massive stars that emit copious amounts of uv radiation. The neutral hydrogen gas in these galaxies (or in the intervening intergalactic medium) absorbs nearly all the uv light that is shorter than 912 Angstroms, the characteristic wavelength of the hydrogen transition.