What is the transit method of finding extrasolar planets?
A) measuring the spectrum of the star for a periodic variation in its Doppler shift
B) monitoring a star to detect periodic dips in its brightness from the planet passing behind the star
C) monitoring a star to detect periodic dips in its brightness from the planet passing in front of the star
D) observing a star during the rare occasion of another star passing directly in front of it; slight changes in how the light is bent by gravity can indicate the presence of planets around the closer star
Question 2
The total number of stars in the observable universe is about ________.
A) the same as the number of grains of sand on all the beaches on Earth
B) the same as the number of grains of sand in a school sandbox
C) 100 billion
D) the same as the number of atoms that make up the Earth
The spectrum generated (b) is a family of peaks, with each successive peak
The Magnetic Fields of Five Planets
Measuring Blood Pressure
Measuring Social Development
The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum