Researchers said recently that the black hole is different from all other known black holes. It is "X-ray quiet" - meaning it does not release powerful X-ray radiation. The presence of x-rays would suggest the black hole was taking in nearby material with its strong gravitational pull. And this black hole was not born in a kind of explosion called a supernova.

Read the article: Scientists Discover Unusual Black Hole (voanews.com)

-This article is about a new discovery that is different than the previous one.

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Under the plan announced in late July, NASA’s Perseverance rover will transport soil samples to a rocket. The rocket will then launch the collected material off the red planet in about 10 years.

The two helicopters being built will help NASA’s Perseverance rover, which is already on Mars. The helicopters will load samples onto the return rocket if NASA’s Perseverance rover breaks down.

Perseverance already has gathered 11 samples with more rock drilling planned. The most recent sample, a sedimentary rock, holds the greatest chance of containing possible evidence of ancient Martian life, said Arizona State University’s Meenakshi Wadhwa. Wadhwa is chief scientist for the retrieval effort.

There’s “a diversity of materials already in the bag, so to speak,” she said, adding that researchers are very excited about bringing the materials back to Earth.

Read the article: NASA to Launch Two More Helicopters to Mars (voanews.com)

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While standard computers work with bits of information that can have only two states, 0 or 1, quantum processors are based on the fact that bits can exist in both states at the same time. As a result, they have tremendous computing power and can do things that no classical computer can do. Quantum computers can be used for solving complex problems and can manage much larger number of calculations at once.

Read the article: Scientists Come One Step Further in Creating Quantum Computers (english-online.at)

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The company made the decision in the aftermath of the emission cheating scandal that hit Porsche's parent company Volkswagen . In an interview, Porsche's CEO Oliver Blume said that Porsche's image had suffered due to the  scandal.

Read the article : Porsche To Stop Production of Diesel Cars (english-online.at)

-This article is about the transformation of major global companies to reduce air pollution.

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