Week 2 – Opinion Poll I am taking this class because: This was the only class that fit my insanely busy schedule I adore astronomy and feel like I have to learn more about the Universe The TA’s in this class really rock! Planets are my passion I need this class to satisfy my Q requirement

Week 3 – Practice Quiz A Which one of the following is FALSE: There are eight planets in our Solar System The expansion of the Universe is accelerating because of the “anti-gravity”-like effect of an entity known as Dark Matter Most of the matter in the Universe is non-luminous and is referred to as Dark Matter The nearest star to the Sun is about 4 light years away For many stars in our galaxy, astronomers have measured the “wobble” induced by the gravity of the orbiting planet

Week 3 – Practice Quiz B Which one of the following is TRUE: When galaxies collide, it is very common for stars to smash into each other Primordial density fluctuations grow under the influence of the electromagnetic force Small galaxies are created by the breaking up of larger galaxies The furthest galaxies we can see from Earth are 100 billion light years away The afterglow from the Big Bang is visible using modern radio and sub-millimeter telescopes

Week 2 – Practice Quiz C Which one of the following is TRUE: The Sun and Solar System lie about 1,000 light years from the center of the Milky Way galaxy The carbon, nitrogen, and oxygen present in the Sun and Earth were synthesized in nuclear fusion reactions in the Sun’s core Mature galaxies tend to look more straggly than infant galaxies The subtle ripples in the density of the early Universe from which galaxies formed are visible in the Big Bang’s afterglow