Are you serious?
Edmund Halley.
Johannes Kepler did that first.
Early Man first noticed comets. Comets were around long before humans.
Yes, they do. But their orbits are highly eccentric. That means that their orbit first takes them very close to the Sun and then very far away, making the orbit very elongated. Also, all the planets orbit the Sun in more-or-less the same plane. ie, All the orbits are in line (Picture a disc). The orbit of most comets, on the other hand, are not in the same plane. Check the images in the related links for a better idea on their orbits.
they come from the left over matter from when that solar system was first made
I think it was Aristotle who first used the Greek word from which "comet" is derived.
According to Wikipedia, elliptical trainers are pretty new to the market. The first one entered the market in 1990.
Yes. They orbit the Sun and as per Kepler's first law they follow an elliptical path. Do note that a circular orbit is a special type of elliptical orbit.
Houston Comets
First, you need to see how much you are willing to spend on an elliptical trainer. At www.ellipticaltrainers.com, they can direct you to different price points of elliptical trainers.
In 1577 a Dutch Astronomer was the first to deduce that comets were outside of our atmosphere. Next it was Issac Newton who concluded that gravity was what caused them to accelerate like they do.
Edmund Halley.
Johannes Kepler did that first.
Early Man first noticed comets. Comets were around long before humans.
Originally recorded by Big Joe Turner, a blues legend. It was later recorded by Bill Haley and the Comets, and became his first chart hit, rising to number 7 in August, 1954.
The Houston Comets defeated the New York Liberty (65-51) to win the first ever WNBA Championship in 1997. The Comets won the first 4 WNBA Championships.
An asteroid would hit earth first