Past the solar system Flashcards
What is the transit method for finding planets?
light levels will drop from a star if a planet passes in front of it, regular dips in light levels indicate orbiting planets.
How do astronomers use astrometry to see if a planet is orbiting a star?
They measure the position of a star, and if there is a planet its gravity will cause a wobble in the star.
What is it called when a planets gravity moves a star and causes re shift or blue shift.
Doppler shifting.
What is this equation: N= R* x Fp x Ne x Fl x Fi x Fc x L
The drake equation, shows how many planets might has intelligent life in our our galaxy.
What do organisms need to live?
A star, with planets.
Able to support life (e.g water, atmosphere, rotation, rocky)
Time to involve intelligence.
Communications, time for signals.
