Planets Flashcards
consists of the sun and everything that orbits, or travels around the sun.
Solar System
holds that what we perceive as the force of gravity arises from the curvature of space and time
Einstein’s 1915 general relativity theory
a widely accepted theory of planet formation, and was published by Chamberlin-Moulton in 1905, says that planets form from cosmic dust grains that collide and stick to form ever-larger bodies.
Planetesimal theory
is the idea that a spinning cloud of dust made of mostly light elements,
The Nebular Hypothesis
flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planets.
Nebula
They describe how (1) planets move in elliptical orbits with the Sun as a focus, (2) a planet covers the same area of space in the same amount of time no matter where it is in its orbit, and (3) a planet’s orbital period is proportional to the size of its orbit (its semi-major axis).
Kepler’s Laws of Planetary Motion
are born from clouds of gas and dust that orbit new stars.
Planets
Is the smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth’s Moon. From the surface of Mercury, the Sun would appear more than three times as large as it does when viewed from Earth, and the sunlight would be as much as seven times brighter.
Mercury
is Earth’s closest planetary neighbor and is the second closest to the sun.
-It is often called Earth’s twin because it’s similar in size and density. These are not identical
Venus
Our home planet is the third planet from the sun, and the only place we know of so far that’s inhabited by living things, Earth is a Germanic word simply means the ground
Earth
is the fourth planet from the Sun – a dusty, cold, desert world with a very thin atmosphere.
Mars
is also a dynamic planet with seasons, polar ice caps, canyons, extinct volcanoes, and evidence that it was even more active in the past.
Mars
is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined and 12 years to orbit
Jupiter
is the sixth planet from the sun and the second-largest planet in the solar system. It has 63 official moons with another 20 awaiting confirmation of their discovery and subsequent naming.
Saturn
is the 7th planet from the sun. It orbits the Sun once every 84 Earth years, which is approximately the length of a human’s life. Uranus has 13 rings and 27 moons.
Uranus
