Comets.
Kepler did not discover ellipses. In 1605 he discovered that the orbits of the planets were ellipses rather than perfect circles.
ALL planetary orbits are ellipses.
Orbits (of astronomical objects around other objects) are basically ellipses.
The ellipses were discovered in the 17th century by one Johannes Kepler. Johannes Kepler discovered that the orbits along which the planets travel around the Sun are ellipses with the Sun at one focus, in his first law of planetary motion.
An ellipse. All orbits are ellipses; there are no natural circular orbits.
Ellipses are a scientific word for the shape of an oval. for example the planets orbits are ellipses.
their orbits
Most orbits are ellipses.
Ellipses.
ALL closed gravitational orbits are ellipses.
Typically ellipses
ellipses.
Kepler did not discover ellipses. In 1605 he discovered that the orbits of the planets were ellipses rather than perfect circles.
Electrons generally orbit in ellipses.
Kepler
ALL planetary orbits are ellipses.
All closed gravitational orbits are ellipses.