Meteoroids often disintegrate in Earth's atmosphere due to the intense heat generated by air friction during entry. This process causes the outer layers of the meteoroid to vaporize and break apart, resulting in the formation of a bright streak of light known as a meteor or shooting star. Only the largest and most robust meteoroids are able to survive the intense heat and make it to the Earth's surface as meteorites.
Not sure about the eartn, but earth has a mean radius of 6370 km.
I have never heard of an "eartn" year but an Earth year has about 365.2422 tropical days.
Yes, the aphelion is on July 4th. According to the article I read, the distance is 94.5 million miles.