Well a person breathes harder when he/she exercizing because you are working hard and your body is not used to it so your trying to pass more air through the lungs
The bright head of the comet Hale-Bopp, called the comma, is shown near the Sun. The combo is made up of dust and gas, concealing a solid comet nucleus made of rock, dust, and ice.
The solid nucleus or core of the hale bopp comet consists mainly of ice and dust coated with black matter, and ice formed mainly of frozen water but possibly other cold substances, such as ammonia, carbon dioxide, carbon monoxide and methane.
