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Scientists identify Earth's largest shield volcano, and it's not Mauna Loa – CNET

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The part of Puhahonu visible above the water is a small island. 


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Mauna Loa in Hawaii has long reigned at the world’s largest shield volcano, but it might need to acknowledge a new champion in that category. 

A team of researchers at the University of Hawaii at Manoa has declared nearby Puhahonu as “Earth’s biggest and hottest shield volcano” in a study published online this month in the journal Earth and Planetary Science Letters

There are multiple types of volcanoes (including stratovolcanoes and cinder cones), but shield volcanoes like Mauna Loa and Kilauea are among the most famous and recognizable. “Shield volcanoes are almost exclusively basalt, a type of lava that is very fluid when erupted,” Oregon State University explains. That gives these volcanoes their distinctive sloping sides.  

Puhahonu, which translates to “turtle rising for breath,” is located in the Papahanaumokuakea Marine National Monument in the Pacific Ocean. It doesn’t look like much when seen from above the water, but the researchers say it’s nearly twice as big as Mauna Loa. 

The team of volcanologists and ocean scientists used an ocean floor survey and chemical analysis of rocks to help reach the new conclusion on Puhahonu. The University of Hawaii noted that scientists had suspected as far back at the 1970s that Puhahonu was the largest of the Hawaiian volcanoes. They just didn’t have the research to back it up until now.

The visible islands atop Puhahonu have been known as Gardner Pinnacles, but the study team hopes to bring attention to its proper name. 

Said study lead Michael Garcia, “We are sharing with the science community and the public that we should be calling this volcano by the name the Hawaiians have given to it, rather than the western name for the two rocky small islands that are the only above sea level remnants of this once majestic volcano.” 

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An Asteroid Bigger Than The Empire State Building Poses ‘No Danger’ On Saturday Night, Says NASA – Forbes

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A huge near-Earth asteroid will pass our planet tonight at a safe distance of 3.2 million miles, according to NASA.

After a spate of doom-laden headlines the space agency felt the need yesterday to update a previous post about near-Earth asteroids with the following note:

“Asteroid 2002 NN4 will safely pass by the Earth on June 6 at a distance of approximately 3.2 million miles (5.1 million kilometers), about 13 times further away from the Earth than the Moon is. There is no danger the asteroid will hit the Earth.”

Asteroid 2002 NN4’s closest approach to Earth will be at 11:20 p.m. EDT. on Saturday, June 6, 2020.

NASA also tweeted the same advice:

NASA Asteroid Watch then tweeted this image of the asteroid’s trajectory:

How big is Asteroid 2002 NN4?

Asteroid 2002 NN4 is huge. Measuring between 820 feet and 1,870 feet (250 meters to 570 meters) according to Space.com. New York City’s Empire State Building is 443.2 meters tall, including its antenna.

That’s over a dozen times bigger than the asteroid that exploded over Chelyabinsk, Russia, in 2013. That was the biggest meteor for over a century.

Would asteroid 2002 NN4 be dangerous if it hit Earth?

Yes—asteroid 2002 NN4 is city-killer size, but it’s not going to cause any harm to anyone.

Wishing you clear skies and wide eyes.

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Crew Dragon with two NASA astronauts docks to ISS – TASS

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NEW YORK, May 31. /TASS/. The Crew Dragon spacecraft with Doug Hurley and Bob Behnken on board has successfully docked to the International Space Station (ISS), as follows from a NASA broadcast on Sunday.

The spacecraft began approaching the ISS about two hours before docking than was carried out 10:16 ahead of the schedule. The Crew Dragon spacecraft was launched using the SpaceX Falcon 9 rocket at 22.22 pm Moscow time on May 30 from the Cape Canaveral, Florida.

Crew Dragon is a configuration of the cargo spacecraft Dragon, which had already delivered cargoes to the ISS. A Falcon-9 rocket put the cargo vehicle in space on March 2. Its docking with the ISS was carried out automatically the next day.

NASA stopped crewed flights in 2011 after the Space Shuttle program came to an end. From that moment on all astronauts were delivered to the ISS and back by Russia’s Soyuz spacecraft. Originally the Untied States was to start using commercial spacecraft for crewed missions in 2017.

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Toddler could be battling rare syndrome in response to COVID-19 – Winnipeg Free Press

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More than a month after testing positive for COVID-19, a Winnipeg toddler is fighting another illness – a possible rare inflammatory syndrome that could be part of the body’s reaction to new viruses.

The girl’s mother told CBC News doctors are trying to find out whether the one-year-old has developed Kawasaki disease, or multi-system inflammatory syndrome in children, now that she is negative for COVID-19 but is still seriously ill.

To read more of this story first reported by CBC News, click here.

The Winnipeg Free Press and CBC Manitoba recognize each other as trusted news sources. This content is made available to our readers as part of an agreement to collaborate to better serve our community. Any questions about CBC content should be directed to: talkback@cbc.ca

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