Culture, General Things, Metric System

Metric System is in General Things.

Culture, General Things, Distance Metric System

Culture, General Things, Distance Metric System, Distances Greater Than a Metre

Culture, General Things, Distance Metric System, Distances Greater Than a Metre, Gigametre

Gigametre. One thousand million metres. Abbreviation Gm.

Culture, General Things, Distance Metric System, Distances Greater Than a Metre, Kilometre

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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Venus

is, on average, 0.67 AUs from the Sun.

has a diameter of 12.104 Kms; 95% of that of Earth.

has a year of 225 Days.

has a tilt of 3 degrees.

Is known as both the Morning Star and the Evening Star since it is brightest from the Earth at both sunrise and sunset.

Culture, General Things, Distance Metric System, Distances Greater Than a Metre, Megametre

Megametre. One million metres. Abbreviation Mm.

Culture, General Things, Distance Metric System, Metre

Metre. The standard unit of distance in the Metric System.

Culture, General Things, Mass Metric System

Culture, General Things, Mass Metric System, Gram

Gram. The standard unit of distance in the Metric System. Abbreviated as g.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Exagram

Exagram. One million million million grams.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Gigagram

Gigagram. One thousand million grams.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Kilogram

Kilogram. One thousand grams.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Megagram

Megagram. One million grams.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Petagram

Petagram. One thousand million million grams.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Teragram

Teragram. One million million grams.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Yottagram

Yottagram. One million million million million grams.

Culture, General Things, Mass Metric System, Masses Greater Than a Gram, Zettagram

Zettagram. One thousand million million million grams. It is abbreviated as Zgs, or, possibly g21.

Culture, General Things, Metric System, Non-Metric Units

Culture, General Things, Metric System, Non-Metric Units, Non-Metric Distances

Culture, General Things, Metric System, Non-Metric Units, Non-Metric Distances, Astronomical Unit Length

Astronomical Unit Length. 149,597,870,700 metres ie 150 Gigametres. The average distance from the Earth to the Sun.

Culture, General Things, Metric System, Non-Metric Units, Non-Metric Distances, Light Year

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.