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 Kepler telescope peered at 42,000 stars, examining just a tiny slice of our galaxy to see how many planets like Earth are out there. Scientists then extrapolated that figure to the rest of the galaxy, which has hundreds of billions of stars.