Suppose you see a photo showing Jupiter half in sunlight and half in shadow (that is, a first quarter Jupiter). This photo might have been taken by ________.
A) the Arecibo radio telescope in Puerto Rico
B) the Galileo spacecraft that orbited Jupiter in the 1990s
C) the Keck telescope on Mauna Kea, Hawaii
D) the Hubble Space Telescope (which orbits Earth)
Question 2
You measure the parallax angle for a star to be 0.5 arcseconds. The distance to this star is
A) 0.5 light-year.
B) 2 parsecs.
C) 5 light-years.
D) 0.5 parsec.
E) 5 parsecs.
Evolutionary change in the tetrapod lineage, showing a transitional form.
Ears pulled back flat against the head with teeth bared and white of the eye showing, indicating ang
An adult tooth, longitudinal view showing internal structures of the crown and root.
Uranus's southern hemisphere in approximate natural colour (left) and in shorter wavelengths (r
A schematic showing the progression of atherosclerosis
Photo of a sign taken at an emissions test facility.