What are the two major ways in which extrasolar planets have been discovered?
A) direct imaging with large telescopes
B) measuring changes in the star's brightness when a planet transits
C) measuring the motion of the star due to the planets' gravitational tugs
D) A and B
E) A and C
F) B and C
Question 2
What will happen in the Sun immediately after it has exhausted its supply of hydrogen in its core?
A) The core will collapse and a supernova will result.
B) The Sun will turn into a white dwarf and cool off forever.
C) The helium core will shrink, heat, and start fusing helium to carbon.
D) The helium core will shrink and heat; a shell of hydrogen will start fusing.
Major causes of hospitalization
Piercey-Normore and DePriest discovered that some lichens readily change partners.
Organ systems of the body with major functions.
Major Causes of Death in U.S by Age Group
The diaphragm: The major muscle of breathing.
Apply direct pressure to points on low back. Press into paraspinal muscles from the side. Move spot ...