Closer to our Sun, temperatures reach thousands of degrees Fahrenheit. What makes Earth's climate so moderate? Separating Earth from the extreme and inhospitable climate of space is a 500-mile-thick cocoon of gases called the atmosphere. All planets have an atmosphere, a layer of gases that surrounds them.
Although not the only cause of chest pain, these heart problems are common causes: Coronary Artery Disease, or CAD. A blockage in the heart blood vessels that reduces blood flow and oxygen to the heart muscle itself. This can cause pain known as angina. It's a symptom of heart disease but typically does not cause permanent damage to the heart. It is, though, a sign that you are a candidate for a heart attack at some point in the future. The chest pain may spread to your arm, shoulder, jaw, or back.
A heavy chest of heavy feeling in the chest in most cases can be attributed to the same causes as 1  : Dyspnea (difficulty breathing) 2  Cardiac pain (heart pain) 3  Chest wall pain.