HD-189733b

Sharpael also known as HD-189733b is an Exoplanet that first appeared in the Wonderful Minds Industries series The Beyond Biospheres and is a planet with its own several episodes. It is a planet slightly larger than Jupiter and beneath its surface is a rather small terrestrial space while the rest is just gas-like atmosphere. The winds of this planet are shockingly fast and the worst part is that the atmosphere is Sillicon based and whenever it rains it doesn't rain regular drops of water but rather it rains molten glass Sideways due to the 5,400 mile per hour winds. This has given some difficulty to actually study the planet but things aren't impossible to the Protagonist as she uses an alloy reflector suit.

## Characteristics

This planet exhibits one of the largest photometric transit depth (amount of the parent star's light blocked) of extrasolar planets so far observed, approximately 3%. The apparent longitude of ascending node of its orbit is 16 degrees +/- 8 away from the north–south in our sky. It and HD 209458 b were the first two planets to be directly spectroscopically observed. The parent stars of these two planets are the brightest transiting-planet host stars, so these planets will continue to receive the most attention from astronomers. Like most hot Jupiters, this planet is thought to be tidally locked to its parent star, meaning it has a permanent day and night.The planet is not oblate, and has neither satellites with greater than 0.8 the radius of Earth nor a ring system like that of Saturn. The international team under the direction of Svetlana Berdyugina of Zurich University of Technology, using the Swedish 60-centimeter telescope KVA, which is located in Spain, was able to directly see the polarized light reflected from the planet. The polarization indicates that the scattering atmosphere is considerably larger (> 30%) than the opaque body of the planet seen during transits.The atmosphere was at first predicted "pL class", lacking a temperature-inversion stratosphere; like L dwarfs which lack titanium and vanadium oxides. Follow-up measurements, tested against a stratospheric model, yielded inconclusive results. Atmospheric condensates form a haze 1,000 kilometres (620 mi) above the surface as viewed in the infrared. A sunset viewed from that surface would be red. Sodium and potassium signals were predicted by Tinetti 2007. First obscured by the haze of condensates, sodium was eventually observed at three times the concentration of HD 209458 b's sodium layer. The potassium was also detected in 2020, although in significantly smaller concentrations. HD 189733 is also the first extrasolar planet confirmed to have carbon dioxide in its atmosphere.

A temperature range of 973 ± 33 K to 1,212 ± 11 K was discovered, indicating that the absorbed energy from the parent star is distributed fairly evenly through the planet's atmosphere. The region of peak temperature was offset 30 degrees east of the substellar point, as predicted by theoretical models of hot Jupiters taking into account a parameterized day to night redistribution mechanism.

Follow-up observations made using the Hubble Space Telescope confirm the presence of water vapor, neutral oxygen and also the organic compound methane. Later, Very Large Telescope observations also detected the presence of carbon monoxide on the day side of the planet. It is currently unknown how the methane originated as the planet's high 700 °C temperature should cause the water and methane to react, replacing the atmosphere with carbon monoxide. Nonetheless, the presence of roughly 0.004% of water vapour fraction by volume in atmosphere of HD 189733 b was confirmed with high-resolution emission spectra taken in 2021.

The weather on HD 189733b is deadly. The winds, composed of silicate particles, blow up to 8,700 kilometres per hour (5,400 mph). Observations of this planet have also found evidence that it rains molten glass, horizontally. shockingly most of the glass it rains also has small microbes in them after being re-visited in the Biospheres beyond series acting as almost Dorito chips to the sillicon based life forms.The Rossiter–McLaughlin effect allows the measurement of the angle between the planet's orbital plane and the equatorial plane of the star. These are well aligned, misalignment equal to -0.5±0.4°. By analogy with HD 149026 b, the formation of the planet was peaceful and probably involved interactions with the protoplanetary disc. A much larger angle would have suggested a violent interplay with other protoplanets.

## History

In The Beyond Biospheres Series it is featured in 5 total episodes going over the life on the planet and the aliens that inhabit it. It is visited in 4068 by our 16 year old protagonist and she first studies the surface of the planet and gets assaulted by the molten raining glass. The episodes all go to show the special Sillicon based life forms that inhabit the skies of that planet and feed on the glass shards and each other but slowly the main character meets the Shrikestars which are sharp Biomechanical looking Semi-humanoid aliens that at first try to cut her to ribbons until they realize she isn't a threat and allow her to study the planet and their base. However interestingly our protagonist finds a green asteroid with glass covering it at the dead center of the terrestrial land part of Sharpnael implying life sprouted from it just like It had for other planets so far.

## Trivia

Sharpnael the planet is based off a real life planet of this exact nature but doesn't have the aliens...or at least not that we know of.

The Characteristics are from wikipedia except for the part about dorito glass and life forms.