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宇宙探査

57 件の記事

Several "pancake volcanoes" called Carmenta Farra

金星のパンケーキドーム特異な火山地形の正体に迫る

金星パンケーキドームファルム火山地形
Computer-generated imagery of Venusian topography data

シフ山金星に眠る巨大盾状火山と最新の火山活動の証拠

シフ山金星盾状火山エイスラ地域
Example encounter.[2]In the planet's frame of reference, the space probe leaves with the exact same speed at which it had arrived. But when observed in the reference frame of the Solar System (fixed to the Sun), the benefit of this maneuver becomes apparent. Here it can be seen how the probe gains speed by tapping energy from the speed of the planet as it orbits the Sun. (If the trajectory is designed to pass in front of the planet instead of behind it, the gravity assist can be used as a braking maneuver rather than accelerating.) Because the mass of the probe is many orders of magnitude smaller than that of the planet, while the result on the probe is quite significant, the deceleration reaction experienced by the planet, according to Newton's third law, is utterly imperceptible.

Gravity Assist(スイングバイ)の仕組みと宇宙探査への応用

Gravity Assistスイングバイ重力アシスト軌道力学
All active Solar System space probes in 2026 (and a list of upcoming ones)

惑星間航行の現状と未来地球を飛び出し深宇宙へ挑む技術

惑星間航行宇宙探査脱出速度スイングバイ
A diagram showing the five Lagrange points in a two-body system

ラグランジュ点とは?宇宙探査の戦略的拠点となる5つのポイント

ラグランジュ点L1L2ジェイムズ・ウェッブ宇宙望遠鏡
The Apollo 17 Command Module America seen in lunar orbit from the ascent stage of the Lunar Module

地球外周回機太陽系を旅する人工衛星の軌跡

地球外周回機人工衛星月周回機火星探査機
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
Chang'e 5 launch configuration (from top):Ascender (Ascent stage)Lander (Lunar lander)Re-Entry Capsule (Earth lander)Orbiter (Orbital vehicle)

嫦娥5号中国首次月球采样返回任务の全貌

嫦娥5号月球サンプルリターン中国国家航天局CNSA
Boulders near Ziwei crater. Image captured by Yutu rover

嫦娥3号中国初の月面着陸と月面車「玉兔」の挑戦

嫦娥3号玉兔月面着陸中国国家航天局
Europa II rocket (larger horizontal rocket in the background), Skylark sounding rocket (front centre-left), and a model of the Ariane 4 orbital rocket (to the right from Skylark) at Euro Space Center

欧州宇宙機関(ESA)の歩みと宇宙開発の最前線

ESA欧州宇宙機関アリアンロケット国際宇宙ステーション
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ひてん(Hiten)が成し遂げた世界初の弾道捕捉による月周回軌道投入

ひてんHiten弾道捕捉低エネルギー遷移
Position of Venera landing sites. Red points denote sites returning images from the surface, black central dots sites of surface sample analysis. Map based on mapping from Pioneer Venus Orbiter and Magellan.

ベネラ計画ソ連が挑んだ金星探査の軌跡と科学的成果

ベネラ計画金星探査ソビエト連邦宇宙探査