ASTRO 1 FINAL EXAM PSU ACTUAL 100

ASTRO 1 FINAL EXAM PSU (ACTUAL / ) | 100

QUESTIONS WITH 100% VERIFIED CORRECT ANSWERS | |

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What is a light year?distance that light travels in 1 year

What is the closest star to Earth besides the Sun? (4.2 ly away) proxima centauri

What is the age of the universe?14 billion years

What is our cosmic address? What is the Local Group?Earth, solar system, milky way galaxy, local group, local supercluster

what is angular resolution?ability to distinguish clearly between two small points in the sky

Why does using a camera (detector or an astronomical instrument) in conjunction with the 1 / 3

telescope enable you to see fainter objects than you would with your eye?detectors gather much more light than our eyes, can take images with longer exposure time than our eyes

Why do we put telescopes in space?earths atmosphere can distort the images since the photons are traveling through the atmosphere and being redirected into the telescope

What wavelengths is the Earth's atmosphere transparent to?visible and radio

What wavelengths is the Earth's atmosphere partly opaque?infrared and uv

What wavelengths is the Earth's atmosphere completely opaque?x ray and gamma rays

characteristics of Jovian vs. Terrestrial planets 2 / 3

terrestrial: small, rocky, close to sun, few moons, moderate

atmospheres, slow rotation rate, no rings

Jovian: large, gaseous, far from sun, many moons and rings, thicccc

atmospheres, fast rotation rate

formation of the solar system why do all the planets lie in nearly the same plane?formed from a large spinning disk of gas and particles, all on same plane

Which exoplanet detection technique is the only technique that can allow us to measure the size of an exoplanet?transit, can find the radius of the exoplanet

Which technique allows us to measure the mass of the planet?radial velocity

What are the properties of most exoplanets? What was surprising when they were first discovered?most are large, gaseous, large eccentric orbits

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