Ten Planets: Stories

Product Information

Prialnik, Dina K., Antonella Barucci, and Leslie Young, eds. The Trans-Neptunian Solar System. Elsevier, 2019.

Main articles: Definition of planet and IAU definition of planet Euler diagram showing the IAU Executive Committee conception of the types of bodies in the Solar System Often local nature reserves or parks are looking for regular volunteers, which can give you practical conservation experience as well as helping to restore nature your local area. Astronomers believe an object twice the size of Earth collided with Uranus roughly 4 billion years ago, causing Uranus to tilt. That tilt causes extreme seasons that last 20-plus years, and the sun beats down on one pole or the other for 84 Earth-years at a time. When polymath Galileo Galilei first studied Saturn in the early 1600s, he thought it was an object with three parts: a planet and two large moons on either side. Not knowing he was seeing a planet with rings, the stumped astronomer entered a small drawing — a symbol with one large circle and two smaller ones — in his notebook, as a noun in a sentence describing his discovery. More than 40 years later, Christiaan Huygens proposed that they were rings.Tenor Horns in E♭ and alto saxophones - These play from the same part, which generally doubles the part of the F horn (see above). There is, if required, a part for 2nd Horn in F, which duplicates that of the Tenor Horn. The beginning of Solar System exploration by space probes in the 1960s spurred a renewed interest in planetary science. A split in definitions regarding satellites occurred around then: planetary scientists began to reconsider the large moons as also being planets, but astronomers who were not planetary scientists generally did not. [7] (This is not exactly the same as the definition used in the previous century, which classed all satellites as secondary planets, even non-round ones like Saturn's Hyperion or Mars' Phobos and Deimos.) [46] [47] A planet's defining physical characteristic is that it is massive enough for the force of its own gravity to dominate over the electromagnetic forces binding its physical structure, leading to a state of hydrostatic equilibrium. This effectively means that all planets are spherical or spheroidal. Up to a certain mass, an object can be irregular in shape, but beyond that point, which varies depending on the chemical makeup of the object, gravity begins to pull an object towards its own centre of mass until the object collapses into a sphere. [216]

Neptune is approximately the same size as Uranus and is known for its supersonic strong winds. The planet is more than 30 times as far from the sun as Earth. According to the IAU definition, there are eight planets in the Solar System, which are (in increasing distance from the Sun): [1] Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Jupiter is the largest, at 318 Earth masses, whereas Mercury is the smallest, at 0.055 Earth masses. [151]It’s not just the products we buy. It’s estimated that a third of all food produced in the world is lost or wasted. Do your bit by eating up leftovers and use any ingredients you have spare to make interesting meals. Try to waste as little food as possible, and compost the organic waste you can’t eat. We are the first generation to know we’re destroying the world, and we could be the last that can do anything about it. Speaking up is one of the most powerful things you can do especially if it’s to the right people.

a b c d e f g h Metzger, Philip T.; Grundy, W. M.; Sykes, Mark V.; Stern, Alan; Bell III, James F.; Detelich, Charlene E.; Runyon, Kirby; Summers, Michael (2022). "Moons are planets: Scientific usefulness versus cultural teleology in the taxonomy of planetary science". Icarus. 374: 114768. arXiv: 2110.15285. Bibcode: 2022Icar..37414768M. doi: 10.1016/j.icarus.2021.114768. S2CID 240071005 . Retrieved 8 August 2022. Main article: Solar System The Solar System, including the Sun, planets, dwarf planets, and the larger moons (except Iapetus). Distances between the bodies are not to scale.The energetic impacts of the smaller planetesimals (as well as radioactive decay) will heat up the growing planet, causing it to at least partially melt. The interior of the planet begins to differentiate by density, with higher density materials sinking toward the core. [145] Smaller terrestrial planets lose most of their atmospheres because of this accretion, but the lost gases can be replaced by outgassing from the mantle and from the subsequent impact of comets. [146] (Smaller planets will lose any atmosphere they gain through various escape mechanisms. [147]) This stunning image of Jupiter, taken by the Hubble Space Telescope, was captured on Aug. 25, 2020 and shows ripples in the planet's atmosphere, Jupiter's famous Great Red Spot and the planet's striking colors. (Image credit: NASA, ESA, STScI, A. Simon (Goddard Space Flight Center), M.H. Wong (University of California, Berkeley), and the OPAL team) Farming animals for meat and dairy requires space and huge inputs of water and feed. Today, one of the biggest causes of forest loss is the expansion of agricultural land for animal feed production, such as soy. And producing meat creates vastly more carbon dioxide than plants such as vegetables, grains and legumes. The Greeks believed Venus was two different objects — one in the morning sky and another in the evening. Because it is often brighter than any other object in the sky, Venus has generated many UFO reports. An enhanced color global view of Pluto showing the heart-shaped area now named 'Tombaugh Regio'. (Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute)

Jupiter has a strong magnetic field, and with 75 moons, including the largest moon in the solar system, Ganymede. a b c d "IAU 2006 General Assembly: Result of the IAU Resolution votes". International Astronomical Union. 2006 . Retrieved 30 December 2009. Substellar objects with true masses above the limiting mass for thermonuclear fusion of deuterium are "brown dwarfs", no matter how they formed nor where they are located.The heat and pressure eventually became so high that hydrogen atoms began to combine to form helium. The nuclear reactions released vast amounts of energy and our sun was formed. Main article: Axial tilt Earth's axial tilt is about 23.4°. It oscillates between 22.1° and 24.5° on a 41,000-year cycle and is currently decreasing. If you insist on including Pluto, it would come after Neptune on the list. Pluto is truly way out there and on a wildly tilted, elliptical orbit (two of the several reasons it was demoted). The idea of planets has evolved over its history, from the divine lights of antiquity to the earthly objects of the scientific age. The concept has expanded to include worlds not only in the Solar System, but in multitudes of other extrasolar systems. The consensus definition as to what counts as a planet vs. other objects orbiting the Sun has changed several times, previously encompassing asteroids, moons, and dwarf planets like Pluto, [5] [6] [7] and there continues to be some disagreement today. [7] All the arrangements present a short (3-minute) excerpt or abridgment of the work named in the title, and have been conceived in such a way that many different combinations of instruments can be successfully employed in playing them, even if your school hasn't got one or more of the instruments shown on the score.