Extrasolar Planets – Part 3

We have been examining the recent discoveries of extrasolar planets – those planets that orbit a star other than the sun. Several thousand exoplanets have been discovered. In many instances, we know only the orbital period and minimum mass of the planet. In cases where the planet passes directly in front of its star, we are also able to estimate the size of the planet, its true mass, and therefore its density. But through some careful measurements and ingenious reasoning, there is additional information we can learn about exoplanets. And these new discoveries challenge the secular view of origins.