Scientists have created the most accurate weather map known for an alien planet, paving the way for future studies of planet atmospheres and weather conditions.
Ever wondered about the weather on WASP-43b? It’s a planet that’s 260 light-years away from us and roughly the size of Jupiter. Scientists at the University of Colorado Boulder have recently created the most accurate weather map of an alien planet ever known- and it’s hot.
The local weatherman would have a field day with these temperatures: in the daytime, it’s 3,000 degrees Fahrenheit, hot enough to melt steel. The nights are a little cooler, reaching a mere 1,000 degrees Fahrenheit.
“WASP-43b is extreme in many ways,” said Jean-Michel Désert of the University of Colorado Boulder, one of the weather map’s creators. “It’s the size of Jupiter with twice its mass. Its orbit around its host star, called an orange dwarf, takes only about 19 hours, the blink of an eye compared to the 365 days it takes Earth to orbit the sun.”
So why is WASP-43b so significant? Because despite the heat, there is water vapor in the atmosphere. This is a clear sign that life could possibly exist, or could have once existed, in the atmosphere or on the surface. It’s also a test planet for Désert’s map, which could one day be used to find habitable, Earth-like planets.
The map was created using the Hubble Space Telescope, which allowed researchers to study and record details about the atmospheres of alien planets. The map is able to show temperature variations by altitude and detect whether water is present.
According to study co-author Jacob Bean, “The big picture is by making these precise measurements of thermal structure and abundance of chemical species [in the atmosphere], it becomes useful to do comparative studies amongst the planets outside our solar system.”
The map project was led by Kevin Stevenson of the University of Chicago and involved 12 researchers from various universities. The findings were published in the journals Science and the Astrophysical Journal Letters.
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