Astronomy & Astrophysics

What is the primary function of a telescope in astronomy?

• Increase the temperature of distant planets

• Collect and magnify light from distant celestial objects

• Enhance the brightness of stars

• Measure atmospheric pressure on celestial bodies

Select the Hottest

• Ton 618

• Wr 102

• Quasar 3C 273

• Sun

What is a light-year?

• A unit of brightness for stars

• The time it takes for a star to complete one orbit

• The distance light travels in one year

• The time it takes for light to travel one year

What is the name of the process by which a star converts hydrogen into helium, releasing a tremendous amount of energy?

• Nuclear Fission

• Nuclear Fusion

• Solar Flare

• Stellar Eruption

The approximate age of the universe is

What is the region around a black hole where escape of anything, including light, is impossible due to gravity?

• Event horizon

• Point of Singularity

• Deep center

• Accretion disk

Which telescope has been orbiting Earth since 1990 and has provided valuable images and data in various wavelengths?

What is the study of celestial bodies beyond our own galaxy called?

• Astrophysics

• Exoplanetology

• Galactic Astronomy

• Cosmology

How are quasars believed to form?

• From the fusion of hydrogen and helium in outer space
• From the accretion disks around supermassive black holes
• From the collapse of a red giant star
• From the collision of neutron stars

What is the primary source of a neutron star's extreme density?

• Accumulation of gas from surrounding space
• Nuclear fusion reactions
• Gravitational collapse during a supernova explosion
• Impact from a nearby black hole