Looking at or near the Sun will cause instant and irreversible damage to your eye!
36
appendIx d: basIcastronomy
Distance between Stars
The distance between our Sun and the nearest star is about 4.3 light years or etwa 40 Billion km. This distance is so enormeous, that in a model where our
Earth is 25 mm (1 inch) distant from the sun, the distance to the next star would be 6.5 km/4 mi!
Our home galaxy, the Milky Way, inhabits round about 100’000’000’000 stars. With its spiral arms, it has a diameter of about 100’000 light years.
Distance between Earth and Moon
383.000 km / 240’000 mi
Distances between galaxies
Our Milky Way
Andromeda Galaxy (M31)
„Whirlpool“ Galaxy (M51)
Our sun
2,25 Mio. light years35 Mio. light years
Distances in space
Fig.49
Moon
Diameter = 3’456 km
Earth
Diameter = 12’664 km
Distance between Planets
The distance between the Sun and our Earth is 150’000’000 km / 93’750’000 mi or 1 AU (Astronomical unit)
Pluto has a very excentric orbit that brings him sometimes inside the orbit of Neptune
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