There are several different classes of supernovae. For example, Type II supernovae are associated with larger mass stars. The Sun will not terminate as a supernova, but may potentially evolve into a standard (or not) planetary nebula (see the Universe Today post “Astronomers Hint that our...
Being a very lazy student, he seldom takes ___ in all his classes. A. notices B. notes C. papers D. sights 8. ___ I could copy down the words on the blackboard, the teacher had wiped them off it. A. When B. Until C. Before D. Unless 9. The doctor said that she...
Being a very lazy student, he seldom takes ___ in all his classes. A. notices B. notes C. papers D. sights 8. ___ I could copy down the words on the blackboard, the teacher had wiped them off it. A. When B. Until C. Before D. Unless 9. The doctor said that sh...
in classes for foreign languages. This is very useful. I collect stamps and am always busy with my collection (收集). Both of us enjoy listening to music and playing cards. Sometimes there are power cuts and we have no electricity in the house. This does not worry us as we just light...
(high school and college) come to NRAO for an intense course in radio astronomy. The staff turn on the knowledge firehose and “really pour it on them”, as Mr. Sizemore puts it. They have classes during the day and then do research at night with the telescopes. He says it’s not ...