1 Heat oil in a wok (with a few drops of sesame oil added) and stir fry the pork. 2  When the pork is cooked remove it from the pan and set aside. 3  Add all the vegetables to the pan and stir fry. 4  While the vegetables are cooking whisk together the chicken stock, oyster sauce and cornstarch in a bowl.
Say what? Helium is pronounced as HEE-lee-em. Helium, the second most abundant element in the universe, was discovered on the sun before it was found on the earth. Pierre-Jules-CÃ©sar Janssen, a French astronomer, noticed a yellow line in the sun's spectrum while studying a total solar eclipse in 1868.
In very hot stars, helium can be ionised so we can expect to see spectral lines due to absorption by helium ions. In most stars the temperature is too cool for helium to ionise so no such lines can form in the spectrum. Even though spectral lines due to helium are not found in cool stars it does not mean that helium is missing from the star. In fact helium is the second most abundant element in the Universe and in stars.