What happens to the visible light radiated by stars located within a dusty gas cloud?
A) It is blocked by dust and its energy is thereby lost.
B) It is absorbed by dust, which heats the dust grains so that they emit the absorbed energy as infrared light.
C) It is reflected by dust back to the star from whence it came.
D) It passes through the cloud unaffected.
Question 2
When a comet passes near the Sun, part of it takes on the appearance of a large, bright ball from which the tail extends. This part is called
A) the nucleus.
B) the coma.
C) the plasma tail.
D) the Oort core.
Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
moon light
Evidence that Light Travels at a Finite Speed
The Types of Stars and Their Sizes
A charcoal canister can be located under the hood or underneath the vehicle.
When both sides of the back have been massaged, redrape the back. With light to moderate force, use ...