2025年1月17日 · Three spacecraft have explored Mercury. The first spacecraft sent to study Mercury. The first spacecraft to orbit Mercury. An international mission comprised of two spacecraft.

The exploration of Mercury has a minor role in the space interests of the world. It is the least explored inner planet. [1] As of 2015, the Mariner 10 and MESSENGER missions have been the only missions that have made close observations of Mercury.

2025年1月3日 · Mercury, any of the first series of crewed spaceflights conducted by the United States. The series began with the suborbital flight of Alan Shepard in 1961; launched the first American into orbit, John Glenn, in 1962; and ended with …

2019年3月29日 · Mariner 10 lifted off from Cape Canaveral, Florida, on Nov. 3, 1973, to begin its journey to Venus and Mercury. The spacecraft passed within 3,584 miles of Venus on Feb. 5, 1974, returning more than 4,000 images and contributing significantly to our understanding of the cloud-shrouded planet during its flyby.

Mercury is the fastest-orbiting planet in our solar system — it blazes around the Sun at 48 kilometers per second (30 miles per second). Missions trying to enter orbit there typically fly past Earth, Venus, and/or Mercury itself, using gravitational nudges to adjust their trajectories.

We discuss major outstanding questions of Mercury science that encompass five categories, and suggest how they might be addressed. Those categories include: the planet’s polar volatile inventory. 1. That a new Mercury lander study be carried out …

2024年12月9日 · Space exploration - Mercury Missions, Astronauts, Technology: The initial U.S. effort to launch a human into space was known as Project Mercury. It was carried out by NASA, which had been given that responsibility over air force objections.

But the best Mercury exploration happened when NASA’s Mariner 10 spacecraft first flew past Mercury in 1974. It revealed that Mercury’s surface is pockmarked with craters like the Earth’s...

2025年1月17日 · Mercury, the closest planet to the Sun, holds a unique place in our solar system. Its proximity to the Sun and small size make it an intriguing subject for scientific exploration. Understanding Mercury provides insights into planetary formation and evolution, offering clues about Earth’s own history.

2023年4月25日 · Space Science, Solar System and Planets, Mercury. Other Multimedia, Websites. This site has facts, figures, images and links about the planet Mercury.