If Hubble's constant is taken to be 70 km/s/Mpc, and a quasar is found with a radial velocity of 0.95 times the speed of light, how far away is the quasar?
a. 4100 Mpc
b. 0.014 Mpc
c. 67 Mpc
d. 74 Mpc
e. 300,000 Mpc
Question 2
The theory that the collapse of a massive star's iron core produces neutrinos was supported by
a. the size and structure of the Crab nebula.
b. laboratory measurements of the mass of the neutrino.
c. the brightening of supernovae a few days after they are first visible.
d. underground counts from solar neutrinos.
e. the detection of neutrinos from the supernova of 1987.
The 20 amino acids found in living organisms
The Peary caribou is a relatively small and pale subspecies found in the tundra of far northern Nort
The yellow-winged darter, Sympetrum flaveolum, is a dragonfly found in Europe and mid and Northern C
Betelgeuse star (Hubble)
Types of kidney stones found in an adult.
Velocity-time Graph