by Allison Meier on. Sharpest ever view of the Andromeda (courtesy NASA/ESA Hubble Space Telescope). The NASA/ESA Hubble Space Telescope has released the largest ever image of the Andromeda galaxy, opening up 100 million stars and star clusters to public exploration. Itâs also the sharpest view of Andromeda, the closest galaxy thatâs a spiral like our own Milky Way, ever taken.
Dizziness or light-headedness when standing up occurs as a result of abnormal blood pressure regulation. Normally, when people stand, gravity causes blood to pool in the veins of the legs and trunk. This pooling lowers the blood pressure and the amount of blood the heart pumps to the brain. Low blood flow to the brain causes the dizziness and other symptoms.
1 Drop in blood pressure (orthostatic hypotension). 2  A dramatic drop in your systolic blood pressure â the higher number in your blood pressure reading â may result in light-headedness or a feeling of faintness. 3  It can occur after sitting up or standing too quickly.oss of balance (disequilibrium). Disequilibrium is the loss of balance or the feeling of unsteadiness when you walk. Causes may include: 1  Inner ear (vestibular) problems. 2  Abnormalities with your inner ear can cause you to feel like you are floating, have a heavy head or are unsteady in the dark.