It has been 35 years since the violent crackdown on the Tiananmen protests of 1989. We talked to an activist whose work pushes for the change those protesters sought.
By combining forefront X-ray observations with state-of-the-art supercomputer simulations of the buildup of galaxies over cosmic history, researchers have provided the best modeling to date of the growth of the supermassive black holes found in the centers of galaxies.
By combining forefront X-ray observations with state-of-the-art supercomputer simulations of the buildup of galaxies over cosmic history, researchers have provided the best modeling to date of the growth of the supermassive black holes found in the centers of galaxies. Using this hybrid approach, a research team led by Penn State astronomers has derived a complete picture of black-hole growth over 12 billion years, from the universe s infancy at around 1.8 billion years old to now at 13.8 billion years old.
Life cycle cost approach for water and sanitation services: A peek into strides of KNUST s Prof Kwabena Biritwum Nyarko myjoyonline.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from myjoyonline.com Daily Mail and Mail on Sunday newspapers.