B) along Jupiter's orbit, 60° ahead of and behind Jupiter, 11) We know that there are large gaps in the average distances of asteroids from the Sun (within. These data were obtained by measuring __________. This graph shows the brightness of a star over the course of a transit. In that case, the revised nebular theory looks just like the old theory, except that it now allows for the possibility of migration. Compared to the planets of our solar system, the composition of a __________ most resembles the compositions of Uranus and Neptune. Question 8 0.5 out of 0.5 points Planets detected via the Doppler technique have been mostly Selected Answer: Jupiter-mass, in very close orbits. What can you conclude about the extrasolar planets shown on this graph? "Earth causes the Sun to move at a snail's pace," says Nave. 19) What do we call a small piece of solar system debris found on Earth? This preview shows page 4 - 5 out of 5 pages. It detects planets in all orbit orientations except face-on. 20) What are the two main differences between extrasolar planetary systems discovered to date, C) extrasolar planet orbits tend to be closer and more eccentric than in our Solar System, 21) A planet is detected via the Doppler technique. It applies to both sound and light (although they are somewhat different mathematically). 5) Why do asteroids and comets differ in composition? A planet's gravitational tug on a star can also be seen in measurements of the star's radial velocity, its motion toward or away from us along the line of sight from Earth to the star.As the star orbits the system's center of mass, it alternately moves toward, then away from us. Choose the correct statement representing how does the transit method work. Because of the electromagnetic force, the two. C) Jupiter-mass, in very close orbits. It shows that we do not fully understand the formation of our Solar System. 28) When do comets generally begin to form a tail? Just over 20 years ago, we were completely unaware of the existence of any planets outside our own solar system. This is because the parent star will wiggle more with a large planet nearby, thereby creating a larger and more easily detectable spectral shift. 3) A rocky leftover planetesimal orbiting the Sun is, 4) An icy leftover planetesimal orbiting the Sun is. However, the two most promising techniques for finding more Earth-like extrasolar planets are direct imaging and transits (so long as we can improve our technology enough!) A) The chromosphere is the source of ultraviolet light, and the corona is the source of X rays. Which of the following is a consequence of the discovery of hot Jupiters for the nebular theory of solar system formation? B) Jupiter-mass, in Jupiter-like orbits. About 97% of all confirmed exoplanets have been discovered using indirect techniques like this. 27) In order to have a comet named after you, you have to, C) be one of the first three discoverers who report it to the International Astronomical Union. C) They formed as gas giants beyond the frost line and then migrated inwards. This page updated on February 10, 2016. It is the change in frequency (and wavelength) due to relative motion of the source and observer. 40) Which of the following statements about an open cluster is true? They formed as gas giants beyond the frost line and then migrated inwards. Which of the following methods has led to the most discoveries of massive planets orbiting near their parent stars? Many of these planets have orbits that differ significantly from perfect circles. Planets detected via the Doppler technique have been mostly. 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