Which layer of the Earth's atmosphere is responsible for protecting life on Earth by absorbing harmful ultraviolet (UV) radiation from the Sun?

Which moon of Saturn is known for its unique two-tone appearance, with one hemisphere being reddish and the other being bright white?

Which moon of Uranus is named after a character from William Shakespeare's play "A Midsummer Night's Dream"?

What is the term for the process by which water vapor is released from plants into the atmosphere?

In the human respiratory system, where does gas exchange with the bloodstream occur?

Which celestial event occurs when a planet appears to reverse its normal direction of motion in the sky?

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

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

What is the term for a region in space where gravitational forces cause small objects to collect, potentially forming a planet?

What is the main driver of surface ocean currents?