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Researchers find a "hot Jupiter" that absorbs almost 99 percent of the light



After the "dead planet" and the planet on which it is snowing sunscreen, here comes another hot Jupiter, showing how cool these exoplanets actually are.

Exoplanet WASP-104b is one of the least-reflected planets ever discovered. Identified for the first time in the year 2014 after the Open Exoplanet Catalog WASP-104b belongs to a class of "exotic worlds", the so-called "hot Jupiter".

These are Jupiter-sized gaseous exoplanets, only considerably hotter because of their proximity to their tribal stars, which they encircle in less than 10 days. NASA explains

Initially considered "strange bullets" turned out Jupiter is called quite common. However, although we are accustomed to knowledge, they remain "shrouded in mystery." NASA points out.

One thing we know about hot Jupiter is that most of them are locked ̵

1; one side of the planet is always facing its parent star, making it the permanent daytime page – and that they are relatively dark and about 60 percent of the time Capturing starlight reaching them notes Science Alert . Last year, the hot Jupiter WASP-12b made headlines when astronomers learned that it absorbs at least 94 percent of the light. At the time, this exoplanet was called "scary" and "weird" and was described as "jet black".

But WASP-104b really takes this cake. A recent study by Keele University in the United Kingdom showed that WASP-104b absorbs more than 97 to 99 percent of the light.

Pause for Gasps

The study, a six-page paper published in the Cornell University Library, describes the exoplanet as "darker than coal" (seriously, that's what they write in the title) and considers it for "one of the least reflective planets found to date."

"Of all the dark planets I could find in the literature that's Top Five-ish. I think top three, "said senior researcher and astrophysicist Teo Mocnik in a statement.

The authors analyzed data from NASA's Kepler Space Telescope K2 mission, specifically the Campaign 14 short cadence data, and found WASP-104b surrounded by a thick, hazy atmosphere of atomic sodium and potassium. These elements absorb light in the visible spectrum and make the planet on the day side (the only side that sees starlight) very dark.

Since the planet is extremely close to its host star, WASP-104b is too hot for clouds to form in its atmosphere (on the day-side that it is), meaning that there is almost nothing there to reflect the light ,

In fact, the exoplanet orbits its parent star – a yellow dwarf who reports about 466 light-years away from Earth, in the Leo constellation, Science Alert – at a distance of only 2.6 million miles. Remarkably, this peculiar planet completes a full orbit in just 1.75 days.

The only hot Jupiter darker than WASP-104b is an exoplanet called TrES-2b, which reflects only 0.1 percent of the light from its parent star. Science Alert .

However, the media association clarifies that these planets are not really dark in color. In fact, judging from their extreme heat, they tend to shine in "a deep, bruise, or dull red," Science Alert points out.

But WASP-104b is not the only hot Jupiter with an impressive history. In December, the world became familiar with the "death planet" WASP-18b, the first hot Jupiter without water and an upper atmosphere almost entirely composed of carbon monoxide.

Equally confusing is the hot Jupiter Kepler-13ab. a planet on which the atmosphere "snows" titanium dioxide, the active ingredient used in most sun creams.


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