What compact objects are left behind after a stars explodes in a supernova? (one or more answers may be correct).
a neutron star.
a black hole.
another star of low mass.
a white dwarf.

If you were a casual recreational hiker with young children, which of the following trails would be least strenuous for a leisurely family outing? a. merced lake trail b. mirror lake loop trail. c. tenaya lake and tuolumne meadows trail d. el capitan trail