タグ

惑星探査

28 件の記事

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
続きを読む →
A Viking lander being prepared for dry heat sterilization – this remains the "gold standard"[1] of present-day planetary protection.

惑星保護の原則宇宙探査における生物学的汚染の防止策

惑星保護前方汚染後方汚染COSPAR
続きを読む →
Composition of the atmosphere of Venus. The chart on the right is an expanded view of the trace elements that all together do not even make up a tenth of a percent.

金星の大気構造極限環境の化学とダイナミクス

金星大気組成二酸化炭素硫酸雲
続きを読む →
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
続きを読む →
Reprocessed Mariner 10 data was used to produce this image of Mercury. The smooth band is an area of which no images were taken.

マリナー10号水星と金星への先駆的な旅

マリナー10号NASA水星探査金星フライバイ
続きを読む →
Mariner 3 and 4 diagram

マリナー4号火星の真の姿を暴いた人類初のフライバイ計画

マリナー4号火星探査NASAフライバイ
続きを読む →
The proposed Venus In-Situ Explorer lander would release a meteorology balloon.

エアロボットによる惑星探査大気圏を飛ぶ次世代の無人機

エアロボット惑星探査金星探査火星ヘリコプター
続きを読む →
Configuration of Akatsuki spacecraft (left) and a photograph of the spacecraft with the solar array paddles being folded (right)[10]

あかつき金星の気象を解き明かした不屈の探査機

あかつき金星探査機JAXAPLANET-C
続きを読む →
📖

金星探査ミッション（VOM）インドISROが挑む「地球の双子星」の謎

金星探査ISROVOMシュクラヤーン
続きを読む →
Artist's rendering of a NASA crewed floating outpost on Venus

HAVOCNASAが構想した金星上空への有人飛行計画

HAVOCNASA金星探査有人宇宙飛行
続きを読む →
📖

火星の岩石命名ルールと探査機が発見した注目個体

火星岩石NASA探査機
続きを読む →
Soviet cosmonaut Yuri Gagarin—the first person in outer space

ソビエト宇宙計画の軌跡人類を宇宙へ導いた情熱と技術

ソビエト宇宙計画宇宙開発史スプートニクユーリ・ガガーリン
続きを読む →