Two planets orbit a distant star. one planet has a semi-major axis of 10 au and a period of 10 years. the second planet has an orbit which is highly eccentric. at closest approach (called periastron) it is 1 au from the star, while its maximum distance from the star (called apastron) is 19 au. draw, approximately to scale, the orbits of the two stars about the parent star. what is the orbital period of the second planet?

What is the approximate chemical composition of the solar nebula?

What is the difference between the cultures of central asia and the caucasus region? the majority of people in central asia are muslim; the majority in the caucasus region are christian. the primary language in central asia is armenian; the primary language in the caucasus region is russian. central asia has been plagued by ethnic unrest; the caucasus region has had little ethnic conflict. the effects of soviet rule can still be seen in central asia; the caucasus region has developed its own identity since the fall of the ussr.

The english language is part of which language family? a. alatic b. dravidan c. indo-european d. khoisan