Earth and Venus DO follow elliptical orbits around the sun (though the orbit of Venus is only very slightly elliptical). Earth's orbit being elliptical is, combined with our axial tilt, why we have seasons.
It doesn't. The earth orbits the sun in an elliptical fashion.
An elliptical shape.
No, Ptolemy's model of the universe did not include elliptical orbits. He believed that celestial bodies moved in perfect circles around the Earth. It was Johannes Kepler who later proposed elliptical orbits as the correct explanation for the motion of planets.
Comet orbits are typically elliptical, meaning they are elongated and not circular like planet orbits. This can result in comets having highly eccentric paths around the Sun.
Comets typically have elliptical orbits, which means their paths around the Sun are elongated and not perfectly circular. This is due to the gravitational influence of other celestial bodies, causing their orbits to be more elongated.
That they followed elliptical orbits.
Elliptical orbits of the planets around the sun actually match what we observe. Newton's Theory of Universal Gravitation states that planets will move around the sun in elliptical orbits.
It doesn't. The earth orbits the sun in an elliptical fashion.
Planets move around the sun in elliptical orbits. These orbits are elongated and follow Kepler's laws of planetary motion, which describe the shape and dynamics of the planetary orbits.
As an elliptical orbit is any orbit that isn't perfectly circular, everything has an elliptical orbit. The planets Mercury and Pluto have the most elliptical orbits of the planets, and are easily seen to be oval shaped. Comets also have highly elliptical orbits.
An elliptical shape.
elongated elliptical orbits around the sun
No, Ptolemy's model of the universe did not include elliptical orbits. He believed that celestial bodies moved in perfect circles around the Earth. It was Johannes Kepler who later proposed elliptical orbits as the correct explanation for the motion of planets.
The orbits of the planets around the Sun are not spherical as many people imagine but are in fact elliptical.
Gravity is the short answer
Kepler
Elliptical