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La Galaxie Tourbillon dans Chiens de Chasse (NGC 5194/5195)
Type d'objet: Galaxie Spirale (type Sc)
Distance de la Terre: ÷ 15,000,000 années lumière / 4.6 Mparsecs
M51 est actuellement une paire de galaxies spirale qui sont formées par leur interaction gravitationnel. NGC 5194 est la plus large galaxie, pesant 100 billions de fois plus que le Soleil. Elle est environ trois fois plus large que sa compagne, la galaxie NGC 5195.
The Whirlpool Galaxy in Canes Venatici (NGC 5194/5195)
Object type: Spiral (Sc type) Galaxy
Distance from Earth: ÷ 15,000,000 light years / 4.6 Mparsecs
Mass: 0.06 Earths
Density: 5.4 grams / cubic centimeter
Surface temperature: 800 F to -360 F
Orbital period: 88 days
M51 is actually a pair of spiral galaxies that are being shaped by their gravitational interaction. NGC 5194 is the larger galaxy, weighing roughly 100 billion times as much as the sun. It is about three times larger than its companion galaxy, NGC 5195.
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