Over 627,000 people die prematurely and 18 million healthy life years are lost every year due to particulate air pollution Sunita Narain, director general of the Centre for Science and Environment (CSE) said at the Anil Agarwal Dialogue held in memory of CSE’s founder Anil Agarwal in the national capital today. She said that despite decades of air quality management, particle pollution remains one of the top killers.
Particle pollution is the microscopic solid and liquid matter suspended in the Earth’s atmosphere. It is mostly black carbon, which is a product of incomplete combustion.
“Black carbon is local air pollutant and has global impact as well. The issue to deliberate will be the emerging science on local-global pollutants and also to understand the national road maps for intervention in key areas of mitigation and to see if these are sufficient or transformational approaches are needed,” Narain said.
The two-day event, that began on Wednesday, had discussions on black carbon and its impact of the climate.
One of the planets detected was orbiting a very bright star.
“We validated a planet on a 10-day orbit around a star called HD 212657, which is now the brightest star found by K2 missions to host a validated planet,” said lead author Andrew Mayo, a doctoral student at the National Space Institute (DTU Space) at the Technical University of Denmark.
For the study, appearing in the Astronomical Journal, the team started out analyzing 275 candidates of which 149 were validated as real exoplanets.
In turn 95 of these planets have proved to be new discoveries, Mayo said.
The Kepler spacecraft was first launched in 2009 to hunt for exoplanets in a single patch of sky, but in 2013 a mechanical failure crippled the telescope.
However, astronomers and engineers devised a way to repurpose and save the space telescope by changing its field of view periodically. This solution paved the way for the follow up K2 mission.
Adding the newly discovered exoplanets brings the total number of exoplanets by K2 mission to almost 300, the study said.
The first planet orbiting a star similar to our own Sun was detected only in 1995. Today some 3,600 exoplanets have been found, ranging from rocky Earth-sized planets to large gas giants like Jupiter. IANS