Which of the following is a characteristic of acids?

What is the name of the galaxy that contains our solar system?

What is the term for the process by which a glacier melts and releases sediments it carried, shaping the landscape?

What is the chemical formula for methane?

What is the chemical symbol for gold?

Which constellation contains the Orion Nebula, a region of intense star formation and a popular target for astronomers?

In which medium does sound travel fastest?

What is the name of the phenomenon where light is bent as it passes through the gravitational field of a massive object, such as a galaxy or cluster of galaxies?

What is the term for the region around a planet where its magnetic field influences charged particles, often creating auroras?

Which famous comet, with a period of about 76 years, was last seen in 1986 and won't return until 2061?