Astronomers using the U.S. space agency NASA’s orbiting Hubble telescope, as well as two orbiting x-ray observatories, say they have gathered the best evidence yet of a so-called “intermediate mass” black hole.A report published Tuesday in the Astrophysical Journal, and reported by NASA, explains that the so-called intermediate-mass black holes (IMBHs) are about 50,000 times the mass of our sun.   They are smaller than the supermassive black holes that lie at the cores of large galaxies, but larger than stellar-mass black holes formed by the collapse of a massive …

China’s National Health Commission (NHC) announced Wednesday it has more than 1,300 asymptomatic coronavirus cases, the first time it has acknowledged cases of people testing positive for the virus but not showing symptoms.At a news briefing in Beijing, commission spokesman Mi Feng said the 1,367 asymptomatic cases were under quarantine and medical observation.The commission had said Tuesday it would begin releasing figures on asymptomatic cases in response to “public concern” about the figures.The French news agency AFP reports there had been mass calls online for the NHC to release the …

Businesses and research facilities have joined a global effort to defeat the coronavirus. With respirators in short supply in many countries, a German university is developing rudimentary, no-frills devices to aid COVID-19 sufferers who are on the path to recovery, freeing fancier models for those whose lives are still in danger. VOA’s Arash Arabasadi reports. …

Facing intense surges in the need for hospital ICU beds, European nations are on a building and hiring spree, throwing together makeshift hospitals and shipping coronavirus patients out of overwhelmed cities via high-speed trains and military jets. The key question is whether they will be able to find enough healthy medical staff to make it all work.Even as the virus slowed its growth in overwhelmed Italy and in China, where it first emerged, hospitals in Spain and France reached their breaking points and the U.S. and Britain  braced for incoming …

Researchers who study Earth’s movements say mandatory shutdowns of transportation systems and other human activities as a result of the coronavirus pandemic has resulted in a drop in what they call seismic “noise” around the world.An article published Tuesday in the scientific research journal Nature explains that human activity, such as moving vehicles and industrial machinery, can move Earth’s crust the way earthquakes and volcanic activity do. And researchers say the lack of such human activity in recent days has made a significant difference.Royal Observatory of Belgium seismologist Thomas Lecocq says …