Is a nebula found in the solar system?

What is high - pressure centers of dry air? Which of the following forces exerted by the earth on the moon keeps the moon in orbit? What does each color mean in the aurora borealis? Why are sparks seen just below Space shuttle main engines prior to main engine ignition? Are sunspots hotter or colder regions of the sun? Why is it important to digitally sign important messages? What constelltion is known as the dragon? What direction does the earth move around the sun? What does a new moon signify and what significance does it hold in various cultures and beliefs? Who were Apollo brothers and sisters? Is the Salut 1 the first space station? What are the cordinates of the Big Dipper on graph paper? What is a funnel shaped gravitational field caused by condensation of a massive neutron star? What are two characteristics of earth allow liquid water exist? Do you weigh more or less during a full moon? What was the name of the scientist who created the theory about gravity? What you call a very large hill? What did Apollo 15 find on he moon? What is stereotaxis? Who inspired Albert Einstein to be a scientist?