The plague-causing bacteria Yersinia pestis evades detection and establishes a stronghold without setting off the body’s early alarms. New discoveries reported yesterday help explain how the stealthy agent of Black Death avoids tripping a self-destruct mechanism inside germ-destroying cells.
Black holes range from modest objects formed when individual stars end their lives to behemoths billions of times more massive that rule the centers of galaxies. A new study using data from NASA's Swift satellite and Fermi Gamma-ray Space Telescope shows that high-speed jets launched from active black holes possess fundamental similarities regardless of mass, […]
WASHINGTON — Using NASA's Hubble Space Telescope, astronomers have uncovered a previously unseen population of seven primitive galaxies that formed more than 13 billion years ago, when the universe was less than 4 percent of its present age.
CAMBRIDGE, Mass. — Silicon's crown is under threat: The semiconductor's days as the king of microchips for computers and smart devices could be numbered, thanks to the development of the smallest transistor ever to be built from a rival material, indium gallium arsenide.