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60 件の記事

The Sun, the planets, their moons, and several trans-Neptunian objects

太陽系岩石惑星における水の分布と起源

太陽系岩石惑星D/H比
Probable lunar occultations of Venus, 2020 to 2060. These are calculated by a simple method that may include some near occultations. The blue points represent occultations closer to the moon's ascending node while the red are closer to the descending node. Note the series of five in 2054, which have been checked.

金星の掩蔽月が金星を隠す天体現象のメカニズムと歴史

金星掩蔽天文学
At left, tidally locked, the Moon rotates at the same rate it orbits the Earth, keeping the same face toward the planet. At right, not tidally locked, if the Moon did not rotate then the face would change over the course of an orbit. Viewed from north; not to scale.

潮汐ロックの仕組みと宇宙における影響

潮汐ロック同期回転天文学
From The Women's Library: Suffrage Collection; Created by the Suffrage Atelier

ルナティック(Lunatic)の語源と歴史月と精神疾患の不思議な関係

ルナティック語源精神疾患
Hekataion with the Charites, Attic, 3rd century BCE (Glyptothek, Munich)

ヘカテ魔法と境界を司るギリシャ神話の三面女神

ヘカテギリシャ神話魔法の女神三面女神
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メーネー月の満ち欠けと時間を司るギリシャ神話の女神

メーネーギリシャ神話セレーネ
Cross over crescent on Plevna Chapel in Moscow

三日月(クレセント)の象徴性と歴史的変遷

三日月クレセントシンボルイスラム教
A medieval clock in Prague, Czechia

月(Month)の定義と世界各地の暦における多様な形式

太陰月グレゴリオ暦
ISRU reverse water gas shift testbed (NASA KSC)

ISRU(現地資源利用)が切り拓く宇宙探査の未来

ISRU現地資源利用宇宙探査火星
Planetary geologist and NASA astronaut Harrison "Jack" Schmitt collecting lunar samples during the Apollo 17 mission in early-December 1972

惑星地質学天体の構造と歴史を解き明かす科学

惑星地質学アストロジオロジー天体地質学太陽系
Geometry of a total solar eclipse (not to scale)

日食のメカニズムと種類太陽が隠れる天文学的現象を解説

日食皆既日食金環日食部分日食
The night side of the Moon, illuminated by earthshine, becomes visible next to the narrow crescent (11 percent, age of the Moon = 3.3 days) with ash-grey moonlight.

アースシャイン(地球照)が照らす月の神秘的な夜

アースシャイン地球照天文学