What is a proplyd?
A) a protoplanetary disk around a young star
B) a protostar hidden inside a dense shell of dust
C) a bright nebula formed in the bipolar outflow from a T Tauri star
D) an amoeba-like creature thought to inhabit ethane lakes on Saturn's moon, Titan
Correct Answer:
Verified
Q63: A T Tauri star is:
A)an intermediate mass
Q64: A Herbig-Haro object is:
A)the gas cloud produced
Q65: Herbig-Haro objects are:
A)dense dust clouds surrounding and
Q66: Herbig-Haro objects, bright, variable regions within nebulae,
Q67: Typical jets of bipolar outflow last for:
A)10
Q69: The Hubble Space Telescope has photographed disks
Q70: A star-forming region is best viewed in
Q71: In the magnetic model for the bipolar
Q72: The jets of bipolar outflow associated with
Q73: When a dark nebula collapses to form
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