Observing Matter in Space
What tool do astronomers use to study distant stars and galaxies?
Telescope
What is the first stage in the life cycle of a star?
Nebula
What is the observable universe?
Visible space
What is cosmic microwave background radiation?
Remnant radiation
Who formulated the law of universal gravitation?
Newton
Name one type of electromagnetic radiation used in space observations.
Radio, Infrared, X-ray
What is a supernova, and what role does it play in the life cycle of massive stars?
Explosion, dispersal
Name the largest galaxy in our local group.
Andromeda
How does the redshift of galaxies support the Big Bang theory?
Expansion, movement
What is the primary source of energy for Earth?
Sun
How does light pollution affect our ability to observe celestial bodies?
Obscures, hinders
Explain the difference between a red giant and a white dwarf.
Size, density
What is dark matter, and why is it important for understanding the universe?
Unseen mass, gravity
What is the significance of the abundance of light elements in the universe?
Primordial composition
Explain how gravity affects the orbits of planets around the sun.
Bending, Elliptical
Describe the difference between a refracting telescope and a reflecting telescope.
Lens, mirror
What type of star is formed from the remnants of a supernova?
Neutron star, black hole
Explain the concept of a light-year.
Distance, light
Explain the term "Hubble's Law."
Expansion rate
How do seasons change on Earth?
Tilt of the Earth
What is spectroscopy, and how is it used to analyze the composition of stars?
Light analysis, composition
Describe the process of nuclear fusion in stars.
Fusion, hydrogen
Describe what a black hole is and how it is formed.
Collapsed star, gravity
What role do supernovae play in measuring distances in the universe?
Distance measurement
How does the gravitational pull of the moon affect Earth?
Tides