ALL POSSIBILITIES should be considered, including an artificial origin, says Abraham Loeb, chair, department of astronomy at Harvard University, US, referring to the periodic bursts of radio waves emanating from a galaxy 500 million light years from Earth. First noticed in September 2018 by the Canadian Hydrogen Intensity Mapping Experiment (chime), a radio telescope at the Dominion Radio Astrophysical Observatory in British Columbia, Canada, the waves have created ripples across the globe for one reason—they arrive in a pattern. This gave birth to theories that they could be from an alien civilisation.
Fast radio bursts (FRBS) are not a new concept. The first one was noticed in 2007 and scientists have documented 110 FRBS so far. A vast majority of FRBS are isolated, with just 10 so far repeating themselves.
This story is from the March 01, 2020 edition of Down To Earth.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 8,500+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the March 01, 2020 edition of Down To Earth.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 8,500+ magazines and newspapers.
Already a subscriber? Sign In
INVISIBLE THREAT
Significant presence of microplastics in Puducherry’s agricultural soil raises concerns for soil and crop health
Feeding off each other
VEGETARIAN MOVEMENTS IN SOUTH ASIA AND THE WEST GREW WITH MUTUAL SUPPORT AND VALIDATION
India's unhealthy patent amendments
Despite strong pleas, the Modi regime has changed the rules to impose a cost on those who challenge faulty patents
URBAN DISCOMFORT
Poorly planned, heat-trapping infrastructure, along with dwindling natural spaces, turn up the temperatures in major Indian cities
BLAZING SUN IS ON
Rising temperatures are testing the limits of human tolerance to heat. With their predominantly built-up landscape, urban areas offer no respite. A study by the Centre for Science and Environment on the morphology and heat patterns of nine Indian cities over the past decade shows how these urban centres are turning into heat islands with a potentially serious impact on human health. An analysis by Rajneesh Sareen, Mitashi Singh and Nimish Gupta, with Shagun in Haryana and Kiran Pandey
"H5N1 may be more severe than COVID-19"
In early April, the US confirmed the first case of avian influenza in livestock, along with cow-to-human transmission of the virus disease.
A PSYCHEDELIC HIGH
Driven by surge in global trials and low success rate of current medications in treating mental health problems, researchers call for home-grown clinical trials of psychedelic drugs
Locked out
Two years after becoming the only state to be excluded from the Centre's ruralemployment guarantee scheme, villages in West Bengal grapple with distress migration and debt traps
'Protection from climate change part of right to life'
The Supreme Court of India, on April 5, recognised that citizens have a right to be free from the adverse effects of climate change, saying it is intertwined with the fundamental rights to life and equality. Here are the key arguments articulated by the three-judge bench of Chief Justice DY Chandrachud and Justices JB Pardiwala and Manoj Misra in their judgement
Weaving dreams
Tribal communities in West Bengal slowly embrace traditional weaving to ensure sustainable livelihood
