Respuesta :
Answer: For #1 scientists look for physical characteristics that are like Earth its self. These characteristics include water, rocks and other complex chemistry that can support life.
Explanation:
Answer:
Explanation:
For #2
NASA uses the Transiting Exoplanet Survey Satellite (TESS), which measures the brightness/luminosity of stars. When this brightness drops regularly, every more or less in the same number of years, then there is the likelihood of a planet orbiting the star. The dip in brightness of the star is directly proportional to the size of the planet and the distance between the star and the orbiting planet.