ガラスの雨降る惑星に硫化水素、ウェッブ宇宙望遠鏡で検知 太陽系外で初

Hydrogen sulfide in glass raining planets, web space telescope for the first time outside the solar system

Hydrogen sulfide in glass raining planets, web space telescope for the first time outside the solar system
木星とほぼ同サイズの太陽系外惑星「HD189733b」は、焼けつく高温と鋭く鳴り響く暴風、横殴りで降るガラスの雨といった現象で、長く天文学者の興味を引いてきた

The HD189733B, an outside planet, which is almost the same size as Jupiter, has long been interested in astronomers, such as burning high temperatures, storms that sound sharp, and glass rain falling sideways.

The HD189733B, an outside planet, which is almost the same size as Jupiter, has long been interested in astronomers, such as burning high temperatures, storms that sound sharp, and glass rain falling sideways.
ここへ来てジェームズ・ウェッブ宇宙望遠鏡の使用により、好奇心をくすぐるこの惑星の新たな特徴が明らかになっている

The use of the James Webb Space Telescope has revealed the new features of this planet that tickles curiosity.

The use of the James Webb Space Telescope has revealed the new features of this planet that tickles curiosity.
それは腐った卵のような臭いのする大気の存在だ

It is an atmosphere that smells like a rotten egg

It is an atmosphere that smells like a rotten egg
研究者らはウェッブ宇宙望遠鏡による観測で、HD189733bの大気を分析

Researchers analyze the atmosphere of HD189733B as an observation by Web Space Telescope

Researchers analyze the atmosphere of HD189733B as an observation by Web Space Telescope
微量の硫化水素の存在を突き止めた

Increased the existence of a small amount of hydrogen sulfide

Increased the existence of a small amount of hydrogen sulfide
硫化水素は無色の気体で、強い硫黄の臭いを発する

Hydrogen sulfide is a colorless gas that emits a strong sulfur smell

Hydrogen sulfide is a colorless gas that emits a strong sulfur smell
これまで太陽系以外では検知されておらず、系外惑星の組成に関する知見を深める発見となっている

Until now, it has not been detected outside of the solar system, and has been discovered to deepen knowledge regarding the composition of an external planet.

Until now, it has not been detected outside of the solar system, and has been discovered to deepen knowledge regarding the composition of an external planet.
複数の研究機関のチームがまとめた今回の研究結果は、8日刊行の科学誌ネイチャーに掲載された

The results of this research compiled by a team of multiple research institutions were published in the Nature on the 8th.

The results of this research compiled by a team of multiple research institutions were published in the Nature on the 8th.
2005年にその存在が明らかになったHD189733bは、地球から64光年の距離にあり、化学組成は太陽系最大の惑星、木星と似ているものの非常に高温であることで知られる

The HD189733B, which revealed its existence in 2005, is known for its 64 light years from Earth, and is known to be very hot, similar to Jupiter, the largest planet in the solar system.

The HD189733B, which revealed its existence in 2005, is known for its 64 light years from Earth, and is known to be very hot, similar to Jupiter, the largest planet in the solar system.
大きさは木星を約10%上回る

The size exceeds Jupiter about 10 %

The size exceeds Jupiter about 10 %
恒星に極めて近いのが高温の理由だ

The reason for the high temperature is that it is extremely close to a star

The reason for the high temperature is that it is extremely close to a star
その距離は水星と太陽の距離の13分の1で、公転周期は約2日とされる

The distance is 1/13 of the distance between Mercury and the sun, and the open cycle is about 2 days.

The distance is 1/13 of the distance between Mercury and the sun, and the open cycle is about 2 days.