Answer:
Old age and hundreds of thousands of stars, only about 30 ly wide
Explanation:
A globular cluster is a collection of stars which are bound by a very strong force known as gravity (gravity is the force of attraction between two bodies). The gravity then causes globular clusters to have a spherical shape with a high number of stars closer to the center (where the gravity is strongest).
These stars are usually very old and the diameter of the clusters are usually only 30 lightyears wide because of the strong gravity.
Answer:
80
Explanation:
(2 x 10 - 5) + (7 x 10 - 5)
= (20 - 5) + (70 - 5)
= 15+ 65
= 80
Gondwana<span> was an ancient supercontinent that broke up about 180 million years ago.</span>
Answer:
It has a thick atmosphere of hydrogen and helium. (d)
We can use light absorption technique to determine which element this atom belongs to.
When light meets an atom it is absorbed. The particles of light (photons) are absorbed by electrons and electrons jump to a higher energy state. When electron jump to a lower energy state they emit photons. If we observe continuous spectrum of a light that comes from this atom we can see black stripes. These stripes are unique for each atom and represent these jumps that electron made. By comparing observed stripes with those that were found in a laboratory we can figure out which element this atom belongs to.
