SCIENCE
ISRO working on green fuels like hydrogen peroxide for rockets
According to Sivan, the space agency is looking to replace its existing liquid engine fuels with green fuel-powered ones. ISRO has also developed ISROSENE, which is a rocket-grade version of kerosene as an alternative to conventional hydrazine rocket fuel. Queried about the green option for its solid fuel-fired engines, Sivan said the work towards this end is also progressing well.
K. Sivan gets one year extension as Space Secretary
The Appointments Committee of the Cabinet has approved the extension of tenure of Sivan for a period of one year beyond January 14, 2021, i.e. upto January 14, 2022 or until further orders, whichever is earlier.
Brazilian satellite to be orbited by Indian rocket reaches Chennai
Amazonia-1 is the first satellite to have been developed completely in Brazil by the National Institute for Space Research (INPE), Brazil's apex body dedicated for space research and exploration. The satellite took eight years to be developed and once launched into space, will help monitor the ecosystem of the Amazon rainforest, the world's largest tropical rainforest, the statement said.
Two galaxies in cosmic dance in NASA's latest video
“We sail through endless sky,” wrote an Instagram user. “Literally one of the most beautiful occulting pairs of galaxies ever!!!” expressed another. “It is amazing what you do, I can’t believe I live on the same planet as you,” praised a third.
Solar Orbiter spacecraft makes its first Venus flyby
The joint US-European Solar Orbiter spacecraft has completed its first of many gravity assist flybys of Venus, to start bringing it closer to the Sun and tilting its orbit in order to observe our star from different perspectives.
Chinese astronomers discover 591 high-velocity stars
High-velocity stars can provide deep insights into a wide range of topics within galactic science, from the central supermassive black hole to the distant galactic halo, according to Lu Youjun, a researcher at the NAOC.
Are earthquakes to blame for Arctic warming?
In the Arctic, one of the factors driving climate warming is the release of methane from permafrost and metastable gas hydrates in the shelf zone. The study published in the journal Geosciences attempted to offer an explanation for abrupt temperature changes observed in the region.
Different blood pressure reading between arms linked to high death risk
Led by the University of Exeter, the global collaboration conducted a meta-analysis of all the available research, then merged data from 24 global studies to create a database of nearly 54,000 people. The data spanned adults from Europe, the US, Africa and Asia for whom blood pressure readings for both arms were available.
ISRO developing green propulsion systems for Gaganyaan rocket
Delivering the 16th Convocation Address at the SRM Institute of Science and Technology, K.Sivan, Secretary, Department of Space and Chairman, ISRO said, the space agency is developing green propulsion for its human spaceflight mission.
Key protein Toll-1 tells developing cells to stick together
A team of Japanese scientists has revealed for the first time that a protein better known for its role in the immune system tells developing cells to stick together.
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