タグ

天文学

310 件の記事

A syzygy occurs during eclipses (numbers 1, 2, 3, 4).

シジジー(惑星直列)の仕組みと天文学的現象

シジジー惑星直列掩蔽
Totality during the solar eclipse of August 11, 1999, showing the solar corona and prominences

食のメカニズム日食と月食が起こる天文学的理由

日食月食シジジー
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
Light pollution limits viewing of celestial sights, as in this night scene from Moscow

肉眼観測の科学人間の視覚能力と天体観測の可能性

肉眼観測天文学光害視力
As seen from the orbiting Earth, the Sun appears to move with respect to the fixed stars, and the ecliptic is the yearly path the Sun follows on the celestial sphere. This process repeats itself in a cycle lasting a little over 365 days.

黄道面とは何か?太陽の通り道と天球座標系の基礎知識

黄道黄道面天球地球の公転
Antikythera Mechanism Saros cycle for the prediction of eclipses ΣΚΓ′, in the red rectangle, and means 223 months. Written between 150 and 100 BCE

サロス周期日食と月食を予測する天文学の神秘的なサイクル

サロス周期日食月食天文学
In this July 1997 still frame captured from video, the bright star Aldebaran has just reappeared on the dark limb of the waning crescent moon in this predawn occultation.

掩蔽(Occultation)とは?天文学における遮蔽現象の仕組みと科学的価値

掩蔽天文学月掩蔽小惑星
The swords found with the disc [19]

ネブラ天空円盤青銅器時代に刻まれた最古の天文図

ネブラ天空円盤青銅器時代ウネティツェ文化天文学
On the Nebra sky disc, dated circa 1600 BC, the cluster of seven dots in the upper right portion of the disk is believed to be the Pleiades.

プレアデス星団夜空に輝く「すばる」の科学と神話

プレアデス星団すばるM45おうし座
Antikythera Mechanism Saros cycle for the prediction of eclipses ΣΚΓ′, in the red rectangle, and means 223 months. Written between 150 and 100 BCE

サロス周期日食と月食を予測する天文学の神秘的なサイクル

サロス周期日食月食天文学
📖

セレウコス(セレウキアの)地動説と潮汐理論を唱えた古代の先駆者

セレウコス地動説天文学潮汐
📖

京房漢代を代表する音楽理論家・天文学者の多才な足跡

京房漢代音楽理論53等分律