So while we are advised by doctors to reduce our intake of sodium through diet, it is important to increase the intake of potassium to reach a balance between the two essential metals inside our bodies. In brief: Potassium vs Sodium. â¢ Sodium has an atomic number of 11 while potassium has an atomic number of 19.
Most common type, most of these are dwarf galaxies (too small and too dim to be easily seen). Shaped like large, 3-dimensional ellipses (football shaped). Giant elliptical galaxies can be over 9 million light-years across and contain trillions of stars.. Dwarf elliptical galaxies- only about 3,000 light-years across and contain fewer than a million stars. Most contain little gas and dust and cannot make new stars. Irregular galaxies can take many different shapes and contain 100 million to 10 billion stars, Less common than elliptical or spiral. a. Larger than Dwarf ellipticals but smaller than spiral galaxies. a galaxy that does not have a regular shape, typically smaller than other types or galaxies, generally have bright, young stars and lots of gas and dust to form new stars.
The Stars of the Milky Way. Our galaxy, the Milky Way, contains maybe 400 billion stars (plus or minus 200 billion) that lie mostly in a flattened spiral disk of some 70-100,000 light-years (ly) across, with a central bulge of about 10,000 ly in diameter.urrounding the Milky Way's spiral disk and bulge is the slightly flattened galactic halo of old stars, averaging somewhat lower in mass than our sun, including a relatively small number of individual stars and 200 or so globular clusters -- roughly half above and half below the disk.