What is the study of the universe beyond Earth's atmosphere, including the stars, galaxies, and cosmic phenomena?
In the periodic table, which element has the chemical symbol "Na"?
In chemistry, what is the process of a substance changing from a solid directly into a gas, bypassing the liquid phase?
What is the largest moon in our solar system, known for its geysers of icy water?
What is the outermost layer of the Earth's atmosphere, where the International Space Station orbits?
Which gas is responsible for the green color in fireworks?
In the periodic table, what element has the atomic number 6?
Which famous scientist formulated the three laws of motion?
In geology, what type of rock forms from the cooling and solidification of molten magma?
In astronomy, what term describes a massive, collapsed star with gravitational pull so strong that nothing can escape it, not even light?