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How black holes can spaghettify stars that fall too close – Mashable

Spaghetti never sounded so deadly.

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Spaghettification sounds like a particularly unpleasant thing to happen to pretty much anything that isn’t a lump of pasta dough. Now imagine it happening to a star.
Thats precisely what astronomers around the world observed over a six-month period when a black hole stretched and ripped apart a star that was sucked into its intense gravitational grasp at a distance of 215 million light years from Earth, as detailed in an Oct. 12 study
published through the Royal Astronomical Society. It was t…

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Climate change: ‘Cooling paint’ could cut emissions from buildings – Yahoo News Australia

Researchers have developed a white paint that reflects sunlight and helps cool buildings.

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sun on building
A new type of white paint has the potential to cool buildings and reduce the reliance on air conditioning, say researchers.
In a study, the new product was able to reflect 95.5% of sunlight and reduce temperatures by 1.7C compared to the ambient air conditions.
The engineers involved say the impact is achieved by adding different-sized particles of calcium carbonate.
Buildings of all types are one of the biggest sources of CO2 emissions.
According to the World Green Building Council,…

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Spacecraft in risky descent to asteroid 200 million miles from Earth – Euronews

200 million miles from planet Earth, NASA’s Osiris-Rex spacecraft is attempting to collect material from Bennu, a small asteroid

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Late on Tuesday, 200 million miles away from planet Earth, a NASA spacecraft began a precarious descent to an asteroid.
The Osiris-Rex craft is attempting to collect a handful of rubble, which scientists say contains the building blocks of our solar system.
It dropped out of orbit around the asteroid, named Bennu, beginning a four and half hour descent to the boulder-covered surface of the space rock.
This is the USA’s first attempt to gather samples from an asteroid, something Japan has acc…

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‘4 1/2 hours of mild anxiousness’: US spaceraft nears asteroid surface – Sydney Morning Herald

The mission calls for Osiris-Rex to shoot out pressurised nitrogen gas to stir up the surface, then suck up any loose pebbles or dust.

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It promised to be the most harrowing part of the mission, which began with a launch from Cape Canaveral back in 2016.
“Well only be kissing the surface with a short touch-and-go measured in just seconds, said the University of Arizona’s Heather Enos, the deputy scientist for the mission.
The sampling arm of the OSIRIS-REx spacecraft during a rehearsal for an approach to the “Nightingale” sample site on the surface of the asteroid Bennu. Credit:AP
A van-sized spacecraft with an Egyptian-inspir…

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