Aliens

Astro 106 Quiz 3 In the assigned video, Carl Sagan estimated that the number of grains in a handful of sand represents: 1. about the number of stars we can see with the naked eye 2. about the 200 nearest stars 3. about the number of planets in the galaxy 4. about the number of stars in the galaxy 5. about the number of the stars in all the galaxies in the known Universe W

ASTRO | 106 | Aliens | Astro 106 Quiz 3 In the assign

Astro 106 Quiz #6 1. The Kepler Mission uses which method to detect exoplanets? a. Astrometry b. Transit Method c. Radial Velocity Method d. Direct Imaging e. Gravitational Microlensing 2. All of the following were goals of Kepler except? a. determine masses of discovered exoplanets using radial velocity method or gravitational lensing techniques b. de

ASTRO | 106 | Aliens | Astro 106 Quiz #6 1. The Keple

Astro 106 Quiz 7 1. First direct detection of an exoplanet was made using the "secondary eclipse" method, which is what? Note that this is not the same as the "transit" method, though closely related. You can find more information on the "secondary eclipse" on wikipedia. a. when the exoplanet passes in front of the star and causes a small dip in the brightness m

ASTRO | 106 | Aliens | Astro 106 Quiz 7 1. First dire

Astronomy 106 Quiz #5 1. If you want to tune into a radio station that is carried by a signal with wavelength 3.0 meters, what channel would you choose? (Note.. the FM radio dial shows the frequency in Mega-Hertz (MHz).. that is, NPR is 91.7FM operating at 91.7 million cycles per second , 91.7 MHz.) a. Station 99.9 FM b. this is an AM station, operating on a lower fr

ASTRO | 106 | Aliens | Astronomy 106 Quiz #5 1. If yo

Astro 106 Quiz 2 How do we estimate the age of the Earth? 1. radiometric dating of oldest earth rocks 2. radiometric dating of oldest meteorites found on earth 3. modeling of the sun 4. radiocarbon dating of moon rocks returned from the NASA Apollo Missions. When did the period of intense asteroid and comet impacts roughly end, setting up an environment conduc

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