Our Solar System. The Solar System. S olar system- the sun and all planets and other bodies that travel around it P lanet any of the primary bodies that orbit the Sun Scientists have long debated the origins of the solar system. Nebular Hypothesis.
Solar system- the sun and all planets and other bodies that travel around it
Planet any of the primary bodies that orbit the Sun
Solar nebula- rotating cloud of gas and dust from which the sun and planets formed
Planetesimal- small body from which a planet originated in the early stages of development of the solar system
Law of Ellipses
Law of Equal Areas
Law of Periods
orbital period the time required for a body to complete a single orbit
Newton discovers the force gravity.
Rotation- the spin of a body on its axis; constitutes day and night.
Revolution - the length of time it takes to travel around the Sun constitutes a year
Astronomical Unit (AU)- the average distance between the Sun and Earth; used to measure the large scale of the solar system approx. 14,959,800 km (93,000,000 miles)
Light Year- the distance light travels in one year