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June

30

2019

    SCIENCE

    NASA’s Punch Mission

    NEWS: Indian scientist to be Co-I for NASA’s PUNCH mission.
    SOURCE: The Hindu.

    NASA has selected Texas-based Southwest Research Institute to lead its PUNCH mission which will image the Sun. This is a landmark mission that will image regions beyond the Sun’s outer corona.

    PUNCH, which stands for “Polarimeter to Unify the Corona and Heliosphere,”

    PUNCH will consist of a ‘constellation’ of four suitcase-sized microsats that will orbit the Earth in formation and study how the corona, which is the atmosphere of the Sun, connects with the interplanetary medium. The mission is expected to be launched in 2022.

    The mission will image and track the solar wind and also the coronal mass ejections – which are huge masses of plasma that get thrown out of the Sun’s atmosphere. The coronal mass ejections can affect and drive space weather events near the Earth.

    Other missions such as NASA’s Parker Solar Probe and the ESA-NASA joint project, Solar Orbiter, which is due to be launched in 2020, can study the structures of the Sun’s atmosphere. The PUNCH mission enhances these by tracking these structures in real time. Since the Sun’s corona is much fainter than its surface layers, it cannot be viewed by the instruments directly. So PUNCH will block out the light from the Sun to view its corona and the structures in it.

    INTERNATIONAL RELATION

    G20

    NEWS: G-20 resolves to free Internet of extremism.
    SOURCE: The Hindu.

    The participants are leaders from 19 countries and the Europian Union (EU). The 19 countries are Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Mexico, Republic of Korea, Republic of South Africa, Russia, Saudi Arabia, Turkey, United Kingdom, United States of America. In addition, leaders of invited guest countries and representatives of invited guest international organizations participate in the summit along with leaders from the G20 members.

    The G20 Summit is formally known as the “Summit on Financial Markets and the World Economy”. As the “premier forum for international economic cooperation” (agreed by leaders at the Pittsburgh Summit in September 2009), representing more than 80% of the global GDP, the G20 has made continuous efforts toward achieving robust global economic growth.

    As globalization progresses and various issues become more intricately intertwined, the recent G20 summits have focused not only on macroeconomy and trade, but also on a wide range of global issues which have an immense impact on the global economy, such as development, climate change and energy, health, counter-terrorism, as well as migration and refugees. The G20 has sought to realize an inclusive and sustainable world through its contributions towards resolving these global issues.