---
title: Uranus and Neptune — a lesson of Mova's school · trees and pragmatics
description: «Uranus and Neptune», a lesson of the space course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Uranus and Neptune are the ice giants: under their hydrogen and helium air they are mostly water, ammonia and methane squeezed into a hot, dense slush.
---

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# Uranus and Neptune

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Lesson 14 of the space course of Mova's primary school: 14 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/space/14-uranus-and-neptune/).

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- [0](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/0/) — Uranus and Neptune are the ice giants: under their hydrogen and helium air they are mostly water, ammonia and methane squeezed into a hot, dense slush.
- [1](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/1/) — Methane in their air swallows red light, so the light that bounces back to us is blue-green for Uranus and blue for Neptune.
- [2](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/2/) — Uranus lies on its side, tipped over by about 98 degrees, so it rolls round the Sun like a ball rolling along the floor rather than a spinning top.
- [3](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/3/) — Neptune was found with a pencil before a telescope: mathematicians saw Uranus being tugged off course, worked out where the hidden planet must be, and astronomers found it there in 1846.
- [4](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/4/) — Both are so far away that only one spacecraft has ever visited them, Voyager 2, in 1986 and 1989.
- [5](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/5/) — Uranus and Neptune are called ice giants because, under hydrogen and helium air, they are mostly water, ammonia and methane in hot, dense slushy forms.
- [7](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/7/) — Uranus was the first planet discovered with a telescope, found by William Herschel in Bath, England, in 1781.
- [8](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/8/) — Uranus is tipped over by about 98 degrees, so it rolls round the Sun on its side.
- [9](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/9/) — Uranus has the coldest measured atmosphere of any planet, about minus 224 degrees Celsius, even though Neptune is further out.
- [11](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/11/) — Uranus's moons are named after characters from Shakespeare and Alexander Pope, such as Miranda, Titania and Oberon.
- [12](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/12/) — Neptune was found in 1846 after mathematicians predicted where it must be from the way it tugged on Uranus.
- [13](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/13/) — Neptune has the fastest winds in the Solar System, about 2,000 kilometres per hour.
- [15](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/15/) — Neptune's largest moon Triton orbits backwards and is probably a captured object from the Kuiper belt, a ring of icy little worlds beyond Neptune.
- [16](https://md.mova.elamur.ai/free/en/corpora/school/space/14-uranus-and-neptune/16/) — Uranus and Neptune have each been visited only once, by Voyager 2, in 1986 and 1989.

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