A) intrinsically very bright, with 70 percent reflectivity, but they are hard to detect because they are very narrow.
B) wide, dense, and very bright, with 70 percent reflectivity.
C) broad, diffuse, and almost transparent, made up of almost nothing bigger than dust particles.
D) narrow and very dark.
10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes.
Explore our library and get Introductory Astronomy Homework Help with various study sets and a huge amount of quizzes and questions
Find all the solutions to your textbooks, reveal answers you would’t find elsewhere
Scan any paper and upload it to find exam solutions and many more
Studying is made a lot easier and more fun with our online flashcards