Examlex
Which stellar classification is for a star hotter than an F5 star?
Urinary Bladder
A muscular chamber that holds urine prior to its expulsion from the body.
Vasoconstriction
The narrowing of blood vessels, which increases blood pressure and decreases blood flow to certain areas.
Branch
A part of a tree that grows out from the trunk or from a bough.
Skeletal Muscle
A type of striated muscle tissue which is attached to bones and is responsible for their movement.
Q7: Horizontal-branch stars have a wide range of
Q7: Two of the brightest stars in Orion
Q31: Which important stellar parameter can be derived
Q46: Use the Hertzsprung-Russell diagram (Figure 10-7)and the
Q63: Suppose a comet is observed to have
Q64: Which sequence of stellar spectral classifications is
Q73: In 1908,Hale noticed that the spectral lines
Q215: Galileo observed the phenomenon of solar rotation
Q232: The T Tauri phase of a protostar
Q272: A protostar of about 1 solar mass