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English: 2022 NASA Science Calendar Science and discovery unite and inspire us—and are a source of hope in difficult times. Our continued exploration of our planet and the universe around us, while facing the challenges of the pandemic, demonstrates the power of the human spirit to push beyond our limitations and transcend obstacles.
The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun. The reform advanced the date by 10 days: Thursday 4 October 1582 was followed by Friday 15 ...
Brazil. 2026 Brazilian general election, 4 October (first round) & 25 October (potential second round) 2026 Brazilian gubernatorial elections. Canada. 2026 Ontario general election. 2026 Quebec general election. Colombia. 2026 Colombian parliamentary election. 2026 Colombian presidential election.
This article documents expected notable spaceflight events during the year 2026 . In 2026, NASA is expected to launch the Artemis III mission, which will land astronauts near the south pole of the Moon. It is expected to be the first mission to land humans on the Moon since 1972. China plans to launch Chang'e 7 to explore the lunar south pole ...
Of the Solar System's eight planets and its nine most likely dwarf planets, six planets and seven dwarf planets are known to be orbited by at least 300 natural satellites, or moons. At least 19 of them are large enough to be gravitationally rounded; of these, all are covered by a crust of ice except for Earth's Moon and Jupiter's Io . [ 1 ]
One galactic year is approximately 225 million Earth years. [2] The Solar System is traveling at an average speed of 230 km/s (828,000 km/h) or 143 mi/s (514,000 mph) within its trajectory around the Galactic Center, [ 3 ] a speed at which an object could circumnavigate the Earth's equator in 2 minutes and 54 seconds; that speed corresponds to ...
The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...
Orrery. A small orrery showing Earth and the inner planets. An orrery is a mechanical model of the Solar System that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; however, since accurate scaling is often ...
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