Star streams that are seen around the Milky Way Galaxy are probably the result of:
A) stars ejected from the Galaxy by gravitational encounters with the central black hole.
B) tidal interactions with satellite galaxies.
C) a collision with a large galaxy in the distant past.
D) stars being pulled from the Andromeda Galaxy.
E) spiral density waves.
Question 2
If a white dwarf gains sufficient mass, it can become a:
A) brown dwarf.
B) type II supernova.
C) type I supernova.
D) planetary nebula.
E) black dwarf.
A melanistic jaguar at the Henry Doorly Zoo. Melanism is the result of a dominant allele and remains
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Ectopic pregnancies. (a) An ectopic pregnancy may occur in any of the locations shown. Interstitial
The Sun is the nearest star to Earth.
Radial and Transverse Velocities of a Star
Spectra of a Metal-Poor and a Metal-Rich Star