Last year, astronomer I discovered it The unusual earth-sized exoplanets they believe have melted lava hemispheres, and other hemispheres are charmingly trapped in the persistent darkness. At about the same time, another group I discovered it An unusual small, cold deplanet with a huge outer companion 100 times the mass of Jupiter.
Meet Tyros
https://www.youtube.com/watch?v=z1fife9uck
Different layers of the atmosphere of WASP-121B.
This latest study relied on observational data collected by the European Southern Observatory (ESO) very large telescopes, particularly equipment called spectroscopic mirrors. espresso This allows the light collected from the four largest VLT telescope units to be processed into one signal. The target exoplanet WASP-121B (Aka Tylos) is located in a puppy constellation about 900 light-years from Earth. A year at Tylos is just 30 hours on earth thanks to his proximity to the host star of Exoplanet. It’s always burning because one side is always facing the star, but the other side of the exoplanet is pretty cold.
These extreme temperature contrasts make it difficult to grasp how energy is distributed in atmospheric systems, and mapping 3D structures makes vertical circulation that cannot be easily replicated, especially in current global circulation models. By determining the pattern, the author. For their analysis, they combined archival espresso data collected on November 30, 2018 and new data collected on September 23, 2023. Shallow atmosphere (hydrogen).
“What we found was amazing. The Jet River rotates material around the planet’s equator, and another flow at a lower level in the atmosphere moves the gas from the hot side to the cool side. This kind of climate has never been seen on any planet before.” Julia Victoria Seidel said Observatory deck at Chile’s Southern European Observatory (ESO) and the Obracote d’Azur, France. “The atmosphere on this planet behaves in a way that challenges us to understand how weather works on all planets, not on Earth. It feels like something from science fiction.”
Nature, 2025. doi: 10.1038/s41586-025-08664-1
Astronomy and Astrophysics, 2025. doi: 10.1051/0004-6361/202452405 (About DOI).
