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太陽系

94 件の記事

Vector diagram of the Sun's perturbations on the Moon. When the gravitational force of the Sun common to both the Earth and the Moon is subtracted, what is left is the perturbations.

軌道摂動天体の複雑な動きを支配する力と計算手法

軌道摂動天体力学二体問題n体問題
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
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
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
Diagram of the early Solar System's protoplanetary disk, out of which Earth and other Solar System bodies formed

太陽系構造から果てしなき境界までを読み解く

太陽系惑星準惑星カイパーベルト
Diagram of the early Solar System's protoplanetary disk, out of which Earth and other Solar System bodies formed

太陽系構造から構成天体までを網羅する宇宙の旅

太陽系惑星準惑星太陽
A historic extraterrestrial sky—Earthrise, the Earth viewed from the Moon. Taken by Apollo 8 astronaut William Anders while in lunar orbit, December 24, 1968.

地球外の空太陽系各惑星から見える宇宙の景色

地球外の空天文学惑星の景色視直径
Map showing the Sun located near the edge of the Local Interstellar Cloud and Alpha Centauri about 4 light-years away in the neighboring G-Cloud complex

局所星間雲(ローカル・インターステラー・クラウド)と太陽系の旅

局所星間雲ローカル・インターステラー・クラウド太陽系局所バブル
Local stars in the galactic plane (click for rotation)

ローカルバブル太陽系を包み込む巨大な宇宙の空洞

ローカルバブル局所熱バブル超新星爆発星間物質
Figure 1. The reconstructed structure of the Milky Way's spiral arms[1]

オリオン腕太陽系が位置する天の川銀河の構造と正体

オリオン腕天の川銀河太陽系銀河構造
Artist's impression of the structure of the Milky Way based on data from the European Space Agency's Gaia telescope, including the location of the spiral arms, bar, and bulge

天の川銀河の構造と謎私たちの故郷である巨大渦巻銀河の全貌

天の川銀河銀河系渦巻銀河ダークマター
Retrograde orbit: the satellite (red) orbits in the direction opposite to the rotation of its primary (blue/black)

逆行運動のメカニズム天文学における回転と公転の不思議

逆行運動順行公転周期自転軸