Scientists used ground-based telescopes to get unprecedented views, thanks to the giant planet’s position in its long orbit around the Sun. For the first time, NASA scientists have strong evidence of a polar cyclone on Uranus. By examining radio waves emitted from the ice giant, they detected the
NASA scientists used microwave observations to spot the first polar cyclone on Uranus, seen here as a light-colored dot to the right of center in each image of the planet. The images use wavelength bands K, Ka, and Q, from left. To highlight cyclone features, a different color map was used for each. Credit: NASA/JPL-Caltech/VLA
Scientists used ground-based telescopes to get unprecedented views, thanks to the giant planet’s position in its long orbit around the Sun.. By examining radio waves emitted from the ice giant, they detected the phenomenon at the planet’s north pole. The findings confirm a broad truth about all planets with substantial atmospheres in our solar system: Whether the planets are composed mainly of rock or gas, their atmospheres show signs of a swirling vortex at the poles.
“These observations tell us a lot more about the story of Uranus. It’s a much more dynamic world than you might think,” said lead author Alex Akins ofin Southern California. “It isn’t just a plain blue ball of gas. There’s a lot happening under the hood.” Uranus is showing off more these days, thanks to the planet’s position in orbit. It’s a long haul around the solar system for this outer planet, taking 84 years to complete a full lap, and for the last few decades the poles weren’t pointed toward Earth. Since about 2015, scientists have had a better view and have been able to look deeper into the polar atmosphere.
The Very Large Array is a collection of 27 radio antennas located at the NRAO site in Socorro, New Mexico. Each antenna in the array measures 25 meters in diameter and weighs about 230 tons. Credit: Alex SavelloThe cyclone on Uranus, compactly shaped with warm and dry air at its core, is much like those. With the new findings, cyclones or anti-cyclones have now been identified at the poles on every planet in our solar system except for Mercury, which has no substantial atmosphere.
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There's a Polar Cyclone on Uranus' North PoleUranus takes 84 years to orbit the Sun, and so that last time that planet’s north polar region was pointed at Earth, radio telescope technology was in its infancy. But now, scientists have been using radio telescopes like the Very Large Array (VLA) the past few years as Uranus has slowly revealing more and more … Continue reading 'There's a Polar Cyclone on Uranus' North Pole'
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