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Ly?
9.461 x 1015 Meter
1 AU?
= 1.496 x 1011 Meter
Definition "star"?
=Large, glowing ball of gas that generates heat an light thgrough nuclear fusion in its core.
Definition "planet"?
= moderately large object orbiting a star & shining primarily by reflecting light from its star.
According to IAU: Object is a planet if it:
Definition "Exoplanets"?
= Planet, that:
Definition "Moon / Satelite"?
= Object orbiting a planet / one object orbiting another.
Definition "asteroid"?
= relatively small and rocky object orbiting a star.
Definition "Comet"?
= relatively small and ice-rich object orbiting a star.
Order of the Planets?
(Sun)
What are the names of the two comet reservoirs in out solar system?
Composition of the planets in relation to their distance to the sun?
Keplers first Law?
Keplers second Law?
The Plaent sweeps out equal areas in equal Time
=> The Planet goes faster when nearer the Sun
Keplers third law?
The aquare of the orbital Period P of any Planet is proportional to the cube of the planet's average distance from the Sun:
a3 = kP2
Newton Laws?
What / Where is the "Snowline"?
= Where temperature reaches 0°C and water ice is formed: at 3-4 AU