Astronomy Quiz

What process powers the Sun’s energy?

• Nuclear fission

• Nuclear fusion

• Chemical reactions

• Radioactive decay

What is the event horizon of a black hole?

• The surface of the black hole

• The region where time stops for an outside observer

• The core of a black hole

• The location where fusion occurs

Which force prevents a main-sequence star from collapsing under gravity?

• Magnetic pressure

• Radiation pressure from fusion

• Dark energy

• Neutrino pressure

What happens in a Type Ia supernova?

• A massive star collapses

• A white dwarf explodes after accumulating too much mass

• Two neutron stars merge

• A black hole forms directly from gas collapse

What type of galaxy is the Milky Way?

• Elliptical

• Irregular

• Spiral

• Ring-shaped

Which method is commonly used to discover exoplanets?

• Parallax measurement

• Radial velocity and transit method

• Direct imaging

• Cosmic microwave background analysis

What is the main cause of the twinkling of stars?

• Their own brightness variations

• Earth’s atmosphere

• Interstellar dust

• Gravitational lensing

What is the approximate age of the universe?

• 4.6 billion years

• 10 billion years

• 13.8 billion years

• 100 billion years

Which planet has the most moons?

• Mars

• Jupiter

• Saturn

• Uranus

What is the cosmic microwave background (CMB)?

• Leftover radiation from the Big Bang

• Emission from black holes

• Light from young stars

• Magnetic field interactions