This planet is known as the Red Planet.
What is Mars?
This term refers to a celebrity invited to appear briefly in a show or film.
What is a guest star?
This treaty ended World War I in 1919.
What is the Treaty of Versailles?
The process by which plants make their food using sunlight.
What is photosynthesis?
This coffee chain’s logo features a twin-tailed mermaid.
What is Starbucks?
This empire, centered in modern-day Turkey, was ruled by sultans and lasted until 1922.
What is the Ottoman Empire?
This gas makes up about 78% of Earth’s atmosphere.
What is nitrogen?
This pink Nickelodeon character lives under a rock in Bikini Bottom.
Who is Patrick Star?
This 1215 document, signed by King John of England, limited the power of the monarchy and influenced the US Constitution.
What is the Magna Carta?
This subatomic particle, with no electric charge, is composed of one up quark and two down quarks.
What is a neutron?
This 2018 film starring Lady Gaga and Bradley Cooper shares its title with multiple earlier versions.
What is A Star Is Born?
This massive trade route connected China to the Mediterranean, allowing for the exchange of goods, culture, and even the plague.
What is the Silk Road?
The region surrounding a black hole beyond which no information can escape.
What is the event horizon?
These annual sporting events showcase top players in an exhibition game each season.
What is an All-Star Game?
The policy of restructuring introduced by Mikhail Gorbachev in the 1980s.
What is perestroika?