1. What are the four ways astronomers can detect extrasolar planets? Doppler Shift, Astrometric Measurement, Transit method, Gravitational Microlensing
2. Choose one of the four ways and explain it in detail. The Transit method can help scienctist detect when the stars reduce thier apparent magnitude.
3. In your answer to #2 you chose one way that astronomers detect extrasolar planets. Search the Internet to find how many extrasolar planets have been detected using this method. none just the brightness of the stars.
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