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...
But turning my list of conjunction pairs into a graph so I could use a pre-made graph theory algorithm looked like it was going to be more code -- and a lot harder to read and less maintainable -- than making a bunch of custom Python classes. I eventually ended up with three ...
Both of Sherwood’s “Double O” novels are masterclasses in world-building. The Double O section is now headed by Moneypenny, who, in this version of the timeline, rose through the ranks with Bond. A male version of M still oversees the Secret Service in general, but he’s a kindly ...
The physical distortion of an object (such as a neutron star) caused by extreme gravitational field gradients present near massive compact objects, such as stellar black holes and neutron stars. Post-Newtonian expansion Expansion of the ratio of the velocity of an object that creates the gravitatio...
For example, while attending graduate school at an ivy league institution, I had the opportunity to teach several undergraduate college classes - such as Thermodynamics, Statics, and Strength of Materials. Such an opportunity not only showed me how people learn differently, but it also taught me ...
(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 ...
we use asteroseismology to identify two classes of stars that must have undergone considerable mass loss, presumably due to stripping in binary interactions. The first class comprises about seven underluminous stars with smaller helium-burning cores than their single-star counterparts. Theoretical models...
Metal–organic frameworks (MOFs) as the most recent classes of porous solids constructed as “node-spacer” nanostructured materials and have become one of the most interesting chemical topic in the recent decade (Fig. 4.37). Sign in to download hi-res image Fig. 4.37. The “node-spacer” ...
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...
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...