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.
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.
Exagram. One million million million grams.
Gigagram. One thousand million grams.
Jean de Waurin's Chronicle of England Volume 6 Books 3-6: The Wars of the Roses
Jean de Waurin was a French Chronicler, from the Artois region, who was born around 1400, and died around 1474. Waurin’s Chronicle of England, Volume 6, covering the period 1450 to 1471, from which we have selected and translated Chapters relating to the Wars of the Roses, provides a vivid, original, contemporary description of key events some of which he witnessed first-hand, some of which he was told by the key people involved with whom Waurin had a personal relationship.
Available at Amazon in eBook and Paperback format.
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.
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.