Metric System is in General Things.
Gigametre. One thousand million metres. Abbreviation Gm.
Kilometre. One thousand metres. Abbreviation Km.
Mercury ...
is, on average, 0.39 AUs from the Sun.
has a diameter of 2440 Kms; around one third of the Earth.
has an eccentic orbit with the closest distance to the Sun being 47 million kilometers, and the farthest distance being 70 million kilometers.
has a year of 88 days.
spins on its axis every 59 days.
is tilted at 2 degrees.
formed around 4.5 Billion years ago.
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Megametre. One million metres. Abbreviation Mm.
Metre. The standard unit of distance in the Metric System.
Gram. The standard unit of distance in the Metric System. Abbreviated as g.
William of Worcester's Chronicle of England
William of Worcester, born around 1415, and died around 1482 was secretary to John Fastolf, the renowned soldier of the Hundred Years War, during which time he collected documents, letters, and wrote a record of events. Following their return to England in 1440 William was witness to major events. Twice in his chronicle he uses the first person: 1. when writing about the murder of Thomas, 7th Baron Scales, in 1460, he writes '… and I saw him lying naked in the cemetery near the porch of the church of St. Mary Overie in Southwark …' and 2. describing King Edward IV's entry into London in 1461 he writes '… proclaimed that all the people themselves were to recognize and acknowledge Edward as king. I was present and heard this, and immediately went down with them into the city'. William’s Chronicle is rich in detail. It is the source of much information about the Wars of the Roses, including the term 'Diabolical Marriage' to describe the marriage of Queen Elizabeth Woodville’s brother John’s marriage to Katherine, Dowager Duchess of Norfolk, he aged twenty, she sixty-five or more, and the story about a paper crown being placed in mockery on the severed head of Richard, 3rd Duke of York.
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Exagram. One million million million grams.
Gigagram. One thousand million grams.
Kilogram. One thousand grams.
Megagram. One million grams.
Petagram. One thousand million million grams.
Teragram. One million million grams.
Yottagram. One million million million million grams.
Zettagram. One thousand million million million grams. It is abbreviated as Zgs, or, possibly g21.
Henrici Quinti, Angliæ Regis, Gesta, is a first-hand account of the Agincourt Campaign, and subsequent events to his death in 1422. The author of the first part was a Chaplain in King Henry's retinue who was present from King Henry's departure at Southampton in 1415, at the siege of Harfleur, the battle of Agincourt, and the celebrations on King Henry's return to London. The second part, by another writer, relates the events that took place including the negotiations at Troye, Henry's marriage and his death in 1422.
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Light Year. The distance travelled by light in one year. 9.46×1012 km.
The Milky Way Galaxy is one of many galaxies that form the Universe, each of which, on average, contains one hundred million stars. NASA has estimated there are 200 billion galaxies with the total number of stars being between 1019 and 1024 stars.
The Milky Way contains between 100 and 400 billion stars, and around the same number of planets. The Solar System is located 27,000 light-years from the centre of the Milky Way ie 255,420,000,000,000,000 Km.