An angiogram uses X-rays and a special dye (contrast) to take pictures of the arteries in your brain, heart, and kidneys. The dye is injected into a small tube or catheter into an artery in your groin or (sometimes) your arm.
As the cloud collapses the force of gravity drawing the cloud inward gradually becomes stronger because the strength of gravity follows an inverse square law with distance. hoâ¦pe that helps.
Describe the nebular hypothesis. 1. A diffuse, slowing rotating cloud begind to contract due to gravity 2. As a result of contraction and rotation, a flat, rapidly rotating disk forms with the matter concentrated at the venter that will become the proto-Sun. 3. The photo sun is so compressed and so hot that nuclear fusion begins. 4. Mass turns into energy and like an H-bomb, an explosion occurs. 5.