Which celestial body is known for developing a prominent tail of gas and dust when it approaches the Sun?
What extremely dense object can form from the collapsed core of a very massive star after a supernova explosion?
Which planet is often called Earth's 'sister planet' due to its similar size and mass?
What theory describes the origin and evolution of the universe from an extremely hot, dense state?
What fundamental force is primarily responsible for the formation of stars, planets, and galaxies?
What theoretical region beyond Neptune is believed to be a source of short-period comets and contains many icy bodies?
What hypothetical form of matter accounts for approximately 27% of the universe's mass-energy content and does not interact with light?
Which famous observational law states that the farther away a galaxy is, the faster it appears to be receding from us?
What is the term for the boundary around a black hole beyond which no light or matter can escape?
Which specific type of electromagnetic radiation is commonly used to study the 'relic' radiation from the Big Bang, known as the Cosmic Microwave Background?