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Polar Cyclones, lightning on Jupiter, and massive stars

26 May 2023
Astronomy, Electromagnetism

To keep me on my toes Robert sent in five links. Here they are … https://phys.org/news/2023-05-scientists-polar-cyclone-uranus.html

https://phys.org/news/2023-05-juno-lightning-jupiter-pulses-ways.html …. and https://phys.org/news/2023-05-mystery-jupiter-stunning.html

https://phys.org/news/2023-05-james-webb-massive-galaxies.html … as well as https://arxiv.org/abs/2304.04460 …  the latter being the source of one of the Phys Org press releases.

NASA scientists have strong evidence of a polar  cyclone on Uranus, from analysing radio waves emitted by the planet. A circling vortex at the poles – common to Uranus and Saturn.

Data from Juno suggests lightning on Jupiter pulses in ways similar to lightning on earth.

Research solves a mystery. Jupiter’s stunning colour changes. A connection with the magnetic field – and torsional oscillation in the interior.

Lastly, the James Webb telescope has discovered ‘too massive’ galaxies – may be even more massive. Robert comments, more problems for Big Bang.

See also https://phys.org/news/2023-05-webb-telescope-universe-biggest-stars.html … which tells us the James Webb telescope has also detected some very big stars – inside globular clusters. These clusters are very old – and sometimes contain millions of stars. The big question, we are told, is why do the stars in these clusters have such a variety of  chemical elements, in spite of all being  presumably born around the same time – from the same cloud of gas. Perhaps that last assumption is not true.

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