The Earth's aphelion position occurs about six months after the earth's perihelion position.The earth's perihelion position is the point in its orbit when it is nearest to the sun. The earth's aphelion position is the point in its orbit when it is the furthest away from the sun. <span> The earth is closest to the sun around 3 January each year and it is farthest from the sun around 4 July every year. It is winter in the northern hemisphere when the earth is closest to the sun, and it is summer in the northern hemisphere when the earth is furthest away from the sun. The seasons in the southern hemisphere are opposite to those of the northern hemisphere.</span>
<span>Indeed, the heliocentric model of the solar system took quite some time to finally gain traction in the scientific community. And, in the 16th century, the main advocate of this model, and the man who eventually pushed the model fully into the mainstream of scientific thought, was 3) Nicolaus Copernicus, a Polish mathematician and astronomer.</span>
The root cause of Somali piracy lies in the threat that illegal fishing posed to the livelihoods of subsistence and commercial fishermen along the coastline. During the early 1990s, Somali subsistence fishing and the fishing industry coexisted with illegally-placed foreign fishermen in the vast Somali waters.
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Answer: C) stars in these regions are hidden by interstellar dust grains.</h2>
Explanation:
Some areas of the Milky Way seem dark because those are areas of the galaxy that are hidden by huge columns of interstellar dust that we cannot see through the visible range of the electromagnetic spectrum (which is the range in which our eyes see).
However, to solve this problem, astronomers use telescopes that work in the range of infrared and radio waves, to observe a little more through this intersetelar dust.
Cirrus cloud can predict fair-pleasant weather.
