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Where is the Kuiper Belt approx?
at 30au - 1000au
Where is the Kuiper Belt approx?
at 30au - 1000au
What are Asteroids and Comets?
Asteroid : Stone
Comets : Icy
How does the Sun influences the Erath?
- Main source of Energy
- Hazard (Radiation)
- Biological effects
- Social effects
- Atmosphere
- Climate
How does the Sun influences the S/C?
- Main source of Energy
- Hazard (Radiation)
- Atmosphere
When was the "big bang" ?
13,8 billion years ago
What is our universe Build of?
5% matter we Know,
rest is dark matter and energy
What are Sunspots, how long do they last? Cylcle and so on?
sunspots are colder areas appearing in pairs of opposite magnetic polarity at the sun surface. They last for approx 11 days with a cycle of 11 years.
Spectralclass of suns?
Hot stars = vielett/blue approx 7000k surface temp
cold stars = red approx 4000k surface temp
Our sun approx 6000k and appears yellow
Difference between large and small stars?
Large ones : Hotter, luminous, rare, but easy to find. short lifetime
small ones : Colder, less luminous, often, hard to find (cause not so bright)
Whats a tidal-lock?
The object(planet) rotation is equal to the orbital period of the star(or planet)
so you can always see the same side. like our moon
Difference between Planets and Dwarfs?
- Both are celextial bodys that orbit around the sun
- both are nearly round due to there mass
- Planets have cleared there neighborhood around its orbits, dwarfs didnt
- dwarfs aren't satelites
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