On The Radio- The first- ever photograph of a black hole


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Powehi is a Hawaiian phrase meaning “embellished dark source of unending creation.” (CNN)

Kasey Dresser| May 6, 2019

This weeks segment looks at what space technology research can also teach us about the earth.

Transcript:

Our obsession with outer space is helping us understand our Earthly environment.

This is the Iowa Environmental Focus.

The recently unveiled, first-ever photograph of a black hole captured imaginations. The black hole–now christened “Powehi” –was actually photographed in April 2017, but the image was just released this year. Taking the image required eight telescopes from around the world.

Telescopes, satellites, and other space-age technology have helped us explore the far reaches of our solar system–and have given us a way to truly analyze and map our climate from above.

The data collected from orbiting satellites has helped climate scientists for decades. Satellite data helped us discover the hole in our ozone layer in 1985. Some satellites are specifically launched to monitor ice caps, track sea levels, and measure the amount of CO2 in our atmosphere. 

Many tools used for monitoring our climate today are modeled after space technology, and the research and development of tools that help us leave our atmosphere will also help us understand our planet.

For more information, visit Iowa Environmental Focus dot org.

From the UI Center for Global and Regional Environmental Research, I’m Sara E Mason.

Earth has three moons: Confirmed


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This moon is not alone out there (flickr).

Julia Poska| November 9, 2018

They’ll never light up the night sky or pull in the tides, but two additional moons orbit the earth, invisible to the naked eye. A team of Hungarian scientists captured images of them for the first time this year.

The reported the discovery in the Monthly Notices of the Royal Astronomical Society September 1, though the media only picked up the story this week.

According to Universe Today, a moon is defined as “a celestial body that makes an orbit around a planet,” like a “natural satellite.”  The big, round rock commonly known as “the moon” certainly fits this definition, as do the two newly discovered moons, though they look vastly different.

These moons are clouds of tiny dust particles, not solid bodies, according to a recent National Geographic feature. They are each about nine times wider than the Earth’s diameter, and orbit at about the same distance from the planet as our regular moon.

“The Kordylewski clouds are two of the toughest objects to find, and though they are as close to Earth as the moon, are largely overlooked by researchers in astronomy,” Judit Slíz-Balogh, one of the study’s authors, told National Geographic.

The clouds are so faint that astronomers were unable photograph them until now, with special Polarized lenses on their cameras, though they’ve suspected the moons’ existence since the 1950s. Kazimierz Kordylewski, a Polish astronomer whom the moons have been named after, thought he saw one in 1961, but was unable to prove it.

 

A visit with Dr. James Hansen discussing his relationship with Dr. Van Allen


 

Kasey Dresser | May 4, 2018

The University of Iowa was very lucky to receive a visit from scientist, researcher, and adjunct professor Dr. James Hansen. He was gracious enough to sit down with us and interview. Today’s video talks about his relationship with Dr. Van Allen. 

A visit with Dr. James Hansen and his advice to students


Kasey Dresser | May 3, 2018

The University of Iowa was very lucky to receive a visit from scientist, researcher, and adjunct professor Dr. James Hansen. He was gracious enough to sit down with us and interview about his work, education, and relationship with Dr. James Van Allen. Today’s video talks about his education and advice to students. 

A visit with Dr. James Hansen about his work


Kasey Dresser | May 2, 2018

The University of Iowa was very lucky to receive a visit from scientist, researcher, and adjunct professor Dr. James Hansen. He was gracious enough to sit down with us and interview about his work, education, and relationship with Dr. James Van Allen.

Hansen was trained in astronomy and physics under Dr. Van Allen at the University of Iowa, graduating with the highest distinction in 1963; he then published his dissertation on Venus and helped launch the Pioneer Venus project in May of 1978. Hansen was the head of the NASA Goddard Institute for Space Studies in New York from 1981 to 2013. Today, he continues his work on climate change as the director of the Program on Climate Science at Columbia University’s Earth Institute, and gave a TED talk on climate change in 2012.

This video, discussing his work, will be the first of a 3 part video series. Tomorrow, Dr. Hansen will speak directly to students and the following day will focus on his relationship with Dr. Van Allen.