Know the order of the planets of our solar system. Do they all have moons? Understand Kepler’s three laws of planetary motion. Calculate the eccentricity of an ellipse (you will be... Know the order of the planets of our solar system. Do they all have moons? Understand Kepler’s three laws of planetary motion. Calculate the eccentricity of an ellipse (you will be given the equation). Calculate the Period (T) and/or Radius (R) of an elliptical orbit (you will be given the equation). Know and understand terms such as ellipse, aphelion, perihelion, focus and foci, Period, Radius, major and minor axis. Earth’s seasons and where Earth is located in relation to the Sun during different seasons. Calculate Force using Newton’s Law of Universal Gravitation and be able to explain what it means. (you will be given the equation). Create a scaled model of an orbiting body around a star. Which direction do the planes orbit the Sun? Understand why we launch a spaceship to go to Mars at specific times. Hohmann Transfer Orbit.
Understand the Problem
The question covers multiple topics related to astronomy and physics, specifically focusing on the characteristics of celestial bodies in our solar system, their motions and laws governing them, as well as gravitational calculations. It emphasizes knowledge and calculations related to orbits, planetary motion, and seasonal changes on Earth.
Answer
Order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. All have moons except Mercury and Venus.
The order of the planets from the sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. All planets except Mercury and Venus have moons. Kepler's three laws explain planetary motion: the law of ellipses, equal areas, and harmonic law.
Answer for screen readers
The order of the planets from the sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. All planets except Mercury and Venus have moons. Kepler's three laws explain planetary motion: the law of ellipses, equal areas, and harmonic law.
More Information
Kepler's first law is known as the law of ellipses, indicating that every planet's orbit is an ellipse with the sun at one focus. His second law, the law of equal areas, states that a line between a planet and the sun sweeps out equal areas in equal times, while the third law, the harmonic law, links a planet's orbital period with its distance from the sun.
Tips
A common mistake is not including Uranus and Neptune when listing the order of the planets or misplacing them. Additionally, one might confuse which planets have moons. Mercury and Venus do not have any moons.
Sources
- Kepler's Three Laws - The Physics Classroom - physicsclassroom.com
- Kepler's Laws of Planetary Motion - Wikipedia - en.wikipedia.org
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