Wednesday, 28 September, 2022
TopicEarth

Topic: Earth

Where did Earth’s early life forms get oxygen? Scientists finally have some answers

Sandhya Ramesh -
Tectonic plate movement could have provided oxygen to some of world's earliest life forms, suggests study by scientists at Newcastle University, UK, published in Nature Communications.

Ancient rocks reveal how Earth’s magnetic field bounced back to save life on the planet

Mohana Basu -
ScientiFix, our weekly feature, offers you a summary of the top global science stories of the week, with links to their sources.

How do we save our planet? A radical economic theory born in the 1970s might have a clue

Victoria Masterson -
While some argue that the practice of André Gorz's theory could detract important interventions, others say it's not that harmful.

Third planet discovered around Sun’s closest star, Proxima Centauri

Sandhya Ramesh -
The planet named Proxima d orbits Proxima Centauri every 5 days. It's estimated to be just about a quarter of Earth’s mass, making it one of the lightest 'exoplanets'.

Earth has a second ‘Trojan’ asteroid, will share its orbit for next 4,000 years

Sandhya Ramesh -
Trojans are asteroids that share orbit with a planet. The second Earth Trojan was detected in 2020 and has been named 2020 XL5. The first had been found a decade earlier, in 2010.

Russian rocket stage could re-enter earth’s atmosphere today, weeks after failed test launch

Sandhya Ramesh -
The Persei upper stage of Russia’s new Angara A5 rocket will fall back into earth’s atmosphere on Wednesday or Thursday after a failed test flight two weeks ago. 

NASA launches DART mission to crash into asteroid, results could help defend Earth some day

Sandhya Ramesh -
The DART mission will crash a space probe into the asteroid Dimorphos to test human capability to protect the planet against near earth objects.

New mineral from deep inside Earth found trapped in a diamond

Mohana Basu -
ScientiFix, our weekly feature, offers you a summary of the top global science stories of the week, with links to their sources.

This quasi-satellite of Earth could actually be a piece of Moon, astronomers say

Sandhya Ramesh -
Quasi-satellites are asteroids that orbit the Sun with orbital period similar to that of the Earth’s. From Earth’s perspective, they appear to orbit the Earth instead.

Earth’s inner core is growing more on one side than the other – but the planet isn’t tipping

Jessica Irving -
Earth’s core was formed very early in our planet’s 4.5 billion-year history, within the first 200 million years.
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Economy

The logo of the Adani Group is seen on the facade of one of its buildings on the outskirts of Ahmedabad | Reuters file photo

From ports to energy transition — Adani Group to invest over $100 billion in next decade

Krishna N Das -
Speaking at Forbes Global CEO Conference in Singapore, Adani said the group intends to do more as a solar player & has earmarked 70% of the investment for the energy transition space.

Defence

Parts of Iranian made 'suicide' drone Shahed-136 after being shot down by the Ukrainian military | Reuters

All about Shahed-136, Iran’s ‘kamikaze’ drone that Russia is using to strike Ukraine

Suchet Vir Singh -
Over the past few days, Russia has hit multiple targets using these Iranian-supplied drones—including civilian structures and amenities—leading to the death of several Ukrainians.

National Interest

Illustration by Soham Sen | ThePrint

AAP’s filling a big vacuum in Indian politics. Question is how long it can sustain without ideology

Shekhar Gupta -
If you find admiration for AAP qualified, if not muted among many of the Modi-BJP’s critics, it is because they question it for its lack of ideological clarity. Especially on secularism.

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