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?

Which of the following is a halogen?

Which moon of Jupiter is the largest moon in our solar system and even larger than the planet Mercury?

What is the primary greenhouse gas responsible for trapping heat in the Earth's atmosphere?

What layer of the Earth's atmosphere contains the ozone layer?

What is the name for a large, circular depression formed by the collapse of an underground cave or magma chamber?

Which of the following is a process of coastal erosion where waves cut into rock and form a notch along the shoreline?

Which of the following is a greenhouse gas?

Which space telescope is set to succeed the Hubble Space Telescope and is designed to observe the universe in infrared wavelengths?

Which type of reaction involves the combination of two or more substances to form a new substance?