Which of the following was NOT done by Galileo Galilei? A. discovering four large moons around Jupiter B. turning the telescope to the sky and believing what it showed his eyes C. explaining retrograde motion with the heliocentric hypothesis D. resolving the Milky Way into many, many stars E. discovering that Venus goes through phases (like the Moon)

Which of the following was NOT done by Galileo Galilei? A. discovering four large moons around Jupiter B. turning the telescope to the sky and believing what it showed his eyes C. explaining retrograde motion with the heliocentric hypothesis D. resolving the Milky Way into many, many stars E. discovering that Venus goes through phases (like the Moon)

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter18: The Outer Solar System

Section: Chapter Questions

Problem 5P: One way to recognize a distant planet is by its motion along its orbit. If Uranus circles the Sun in...

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Johannes Kepler worked as an assistant to the observatory of Brahe at the age of 27. Brahe collected astronomical observations, which were passed into Kepler, on his death. Among the significant contributions of Brahe: 1. His observations on the planetary motion of Mars were used by later astronomers, including Kepler to construct the present model of the solar system. 2. In 1572, he observed supernova as a star that appeared suddenly, became visible for 18 months before it faded from view. Nowadays, supernova is called an exploding star. 3. In 1577, he observed a comet by measuring its parallax. His claim contradicted the idea of Aristotle that comets are "gases burning in the atmosphere." By measuring the parallax for the comet, he was able to show that the comet was further away than the Moon. 4. His findings that stars do not have parallax, he concluded that either: (a). the earth was motionless at the center of the universe; or (b). the stars were so far away that their parallax…
9 The discovery of Eris A Was not surprising, because the existence of a massive "Planet X" had been predicted nearly a century ago. B Was surprising, due to its "backwards" orbit around the Sun. C Was surprising, since we thought we knew about all large objects in the solar system. Was not surprising, because other Kuiper belt objects approaching the size of Pluto had already been discovered. D
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The moons Prometheus and Pandora orbit Saturn at 139,350 and 141,700 kilometers, respectively. a. Using Newton's version of Kepler's third law, find the orbital periods of the two moons. b. Find the percent difference in their.distances and in their orbital periods. c. Consider the two in a race around Saturn: In one Prometheus orbit, how far behind is Pandora (in units of time)? In how many Prometheus orbits will Pandora have fallen behind by one of its own orbital periods? Convert this number of periods back into units of time. This is how often the satellites pass by each other.
Until recently, the term "planet" had no clear-cut definition. In August of 2006, leading astronomers established new guidelines and declared that Pluto is no longer a planet. Which of the following is either false or least consistent with the new guidelines? Group of answer choices Pluto is by far the largest known object in the Kuiper belt, while Eris is the largest known object in the asteroid belt. A planet must have cleared the neighborhood around its orbit. Pluto is automatically disqualified from being a planet because its oblong orbit overlaps with Neptune's. A planet must have sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a nearly round shape. Pluto and the asteroid Ceres are both now classified as dwarf planets.
1. using Newton’s Law of Universal Gravitation and some kinematics calculation we can calculate the mass of the planet. For this, use this equation in the image: Given: - vmax = 1.5 m/s - Pstar = 3.5 days - Mstar = 1.148 Msun, where Msun = 1.98847×1030 kg. This calculation is not shown.
Question 1 (Total: 30 points) a. What is a repeat ground-track orbit? b. Explain why repeat ground-track and Sun-synchronous orbits are typically used for Earth observation missions. c. The constraint for a Sun-synchronous and repeat ground-track orbit is given by T = 286, 400, where I is the orbital period in seconds, m the number of days and k the number of revolutions. Explain why this is, in fact, a constraint on the semi-major axis of the orbit.
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Which evidence first supported the heliocentric model of the solar system? A. Mapping of stars using the unaided eye B. Taking pictures of distant galaxies with statellite-based cameras C. Determining that planets orbit in elliptical paths with telescope D. Observing the surface features of nearby planets and moons with telescopes
If you visited another planetary system, would you be surprised to find planets older than Earth? Why or why not?
1. The diameter of the Sun is equal to 1.392*10^9 m, and the distance from the Sun to Saturnis equal to 9.5 AU. Suppose you want to build an exact scale model of the solar system,and you are using a volleyball with average diameter of 21 cm to represent the Sun. a) In your scale model, how far away would Saturn be from the Sun? Give your answer inmeters.b) The actual diameter of Saturn is 116,460 km. What would be Saturn’s diameter in yourscale model? Give your answer in centimeters.
22. Please show the work in detail