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The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
The object was seen by many other astronomers over a large period of time: by James Short in 1740, [4] by Andreas Mayer in 1759, [4] by Louis Lagrange in 1761, [5] another eighteen observations in 1761, including one in which a small spot was seen following Venus while the planet was in a transit across the Sun, eight observations in 1764, and ...
Its orbit revealed that it was a new planet, Uranus, the first ever discovered telescopically. [20] Giuseppe Piazzi discovered Ceres in 1801, a small world between Mars and Jupiter. It was considered another planet, but after subsequent discoveries of other small worlds in the same region, it and the others were eventually reclassified as ...
On rare occasions, Venus can actually be seen in both the morning (before sunrise) and evening (after sunset) on the same day. This scenario arises when Venus is at its maximum separation from the ecliptic and concomitantly at inferior conjunction; then one hemisphere (Northern or Southern) will be able to see it at both times. These respective ...
1969 – Apollo 11 mission landed on the Moon, first humans walking upon it. [185] They return the first lunar samples back to Earth. [186] 1970 – Venera 7 Venus lander sends back the first information successfully obtained from the surface of another planet. [187]
Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object slammed into the moon 3.8 billion years ago.
First Venus lander and the first spacecraft to "soft" land on another planet (with some data returned from the surface) [18] [161] [162] Luna 16: 12 September 1970 First robotic lunar sample return [10] [163] Zond 8: 20 October 1970 Lunar flyby and return to Earth [46] [164] [165] Luna 17/Lunokhod 1: 10 November 1970 First remote controlled ...
The tidally locked synchronous rotation of the Moon as it orbits the Earth results in it always keeping nearly the same face turned towards the planet. The side of the Moon that faces Earth is called the near side, and the opposite the far side. The far side is often inaccurately called the "dark side", but it is in fact illuminated as often as ...