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Secret Ingredient Found to Power Supernovas

Turbulent matter swirls around the center of a collapsing star. The supernova’s shockwave, shown in blue, gets an extra push from the turbulence, while the dense core at the center will go on to form a neutron star.

In 1987, a giant star exploded right next to our own Milky Way galaxy. It was the brightest and closest supernova since the invention of the telescope some four centuries earlier, and just about every observatory turned to take a look. Perhaps most excitingly, specialized observatories buried deep underground captured shy subatomic particles called neutrinos streaming out of the blast.

These particles were first proposed as the driving force behind supernovas in 1966, which made their detection a source of comfort to theorists who had been trying to understand the inner workings of the explosions. Yet over the decades, astrophysicists had constantly bumped into what appeared to be a fatal flaw in their neutrino-powered models.

Read on Quanta
Improved microscopy technique sees living cells with seven times more sensitivity

Uncovering the mysteries of how cells function requires advanced imaging techniques to look inside the cells themselves. Research from the University of Tokyo introduces a new microscopy technique that allows us to see cellular structures in much more detail than before, without the need to use any dyes or high-power lasers that may alter the cell.

Taking images inside living cells using only light relies on the very small differences in the phase of the light as it passes through different parts of the cell’s architecture. Creating more detailed pictures requires the ability to detect even the most subtle of these changes with the highest possible sensitivity.

Read on physicsworld.com
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That is a collection of micrometeorites found in Antarctica, featured in the 2020 book Atlas of Micrometeorites.

Every year, roughly 10 particles of space dust land on each square meter of Earth’s surface.
That means that they are everywhere. They are on the streets. They are in your home. You may even have some cosmic dust on your clothe.

Round and multicolored like tiny marbles, micrometeorites are as distinctive as they are ubiquitous, yet they escaped notice until the 1870s, when the HMS Challenger expedition dredged some up from the bottom of the Pacific Ocean.

Read more on Quanta
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China has achieved another milestone in space. Its first spacecraft designed to explore Mars arrived at the planet successfully on 10 February just before 8.00pm Beijing time, a day after the United Arab Emirates’ Hope spacecraft.