How does the Kepler mission plan to detect Earth-like planets ...

[dmcintosh]

How does the Kepler mission plan to detect Earth-like planets around other stars?
 
  A) by measuring the Doppler shift in spectral lines as the central star is tugged to and fro by the planet
  B) by observing the slight dip in brightness of the central star as the planet transits
  C) by directly imaging the planet
  D) by observing the spectrum of the planet
  E) by measuring the slight shift in position of the central star as it is tugged to and fro by the planet

Question 2

The analysis of Martian rocks on Earth show that they contain
 
  A) tantalizing but unconfirmed hints of life.
  B) bacteria with closely related DNA to bacteria on Earth.
  C) bacteria with very different DNA from bacteria on Earth.
  D) water ice.
  E) chemical byproducts of life.

[jharrington11]

Answer to Question 1

B

Answer to Question 2

A

[dmcintosh]

Gracias!

[ricroger]

Excellent