What type of galaxy can result from collisions between galaxies?
A.) Spiral
B.) Elliptical.
C.) Irregular.
D.) A or C.
E.) B or C.
Ans: E.) B or C.
You might also like to view...
While our Milky Way's black hole is not massive enough to have once been quasar, it must have passed through its Seyfert phase by 3.5 billion years ago. Explain how we know this
What will be an ideal response?
B-type stars have lifetimes
A) long enough for advanced life to evolve B) too short for planet formation C) long enough for planets to form but not for life to appear D) long enough for planets to form and for simple life to appear, but not long enough for advanced life to develop
Which of the following is considered by scientists to be physically "real," but yet is not made of atoms or of other material particles such as protons, electrons, etc.?
A) the air B) neutron stars C) electromagnetic fields D) the ether E) Nonsense--we have known since Democritus that everything is made only of atoms and empty space.
Which galaxy rotation curve, based on hydrogen gas speeds and locations, would indicate an unusually large amount of dark matter?
A) Orbital speeds remain constant, beyond where the stars are. B) Orbital speeds rise, beyond where the stars are. C) Orbital speeds decline, beyond where the stars are.