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IMAGE: An artist s impression showing the increasing effect of ram-pressure stripping in removing gas from galaxies, sending them to an early death. view more
Credit: ICRAR, NASA, ESA, the Hubble Heritage Team (STScI/AURA)
Large galaxies are known to strip the gas that occupies the space between the stars of smaller satellite galaxies.
In research published today, astronomers have discovered that these small satellite galaxies also contain less molecular gas at their centres.
Molecular gas is found in giant clouds in the centres of galaxies and is the building material for new stars. Large galaxies are therefore stealing the material that their smaller counterparts need to form new stars.
Despite Covid-19’s downward trajectory in India, two worries remain
Researchers are not resting easy yet. Representational image. | Niharika Kulkarni/Reuters
When India went into lockdown in March 2020, the fear of Covid-19 swiftly spreading through a densely populated country of 130 crore people was dangerously real.
A harsh lockdown, one of the strictest in the world, created a humanitarian crisis of its own, pushing millions of migrant workers to take arduous journeys back home on foot. But the possible catastrophic impact of the pandemic was considered greater in magnitude by the government.
Nearly 11 months on, the Covid-19 infections and fatalities in India tell a different story.
February 18, 2021
When India went into lockdown in March 2020, the fear of Covid-19 swiftly spreading through a densely populated country of 1.3 billion people was dangerously real.
A harsh lockdown, one of the strictest in the world, created a humanitarian crisis of its own, pushing millions of migrant workers to take arduous journeys back home on foot. But the possible catastrophic impact of the pandemic was considered greater in magnitude by the government.
Nearly 11 months on, the Covid-19 infections and fatalities in India tell a different story.
In the early days of the pandemic in the country, for instance, the projected fatalities from the viral infection were believed to be 4 million. But as of Feb. 18, deaths from Covid-19 in India stand at 155,913, less than 10% of the estimate.
Catherine holds a PhD (2006) in Epidemiology from the University of Heidelberg, and a Master of Science (2002) in Community Health and Health Management.
She is the Director of Research at the African Population and Health Research Center (APHRC) where she joined as a Post-doctoral Fellow in May, 2006. Her research interests are in the epidemiology of non-communicable diseases in the African region and in health systems strengthening.
Catherine is an Alumnus of the University of Heidelberg having completed her doctoral studies in Epidemiology in the then Department of Tropical Hygiene and Public Health, under the auspices of the Graduertienkolleg 793 in April 2006. She also obtained a Master of Science degree in Community Health and Health Management in 2002 from the same department. Prior to her graduate studies, Catherine studied Medicine at Makerere University, Kampala after which she worked as a medical officer at Rushere hospital, a rural health facility in Western Uganda for