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.
1 The disturbance causes clumps to form inside the cloud. 2  The clumps collapse inward drawing gas inward by gravity. 3  The collapsing clump compresses and heats up. 4  The collapsing clump begins to rotate and flatten out into a disc. 5  The disc continues to rotate faster, draw more gas and dust inward, and heat up.