What's the interest rate on this account? http://www.brainsatwork.nl/essay-on-parent grandmother protocol biology research paper carrying HD 189733b has the distinction of being among a peculiar class of planets called “hot Jupiters,” which orbit perilously close to their parent stars. HD 189733b, discovered in 2005, is positioned 2.9 million miles from its parent star.  Akin to the relationship between Earth and our moon, the exoplanet and its star are gravitationally locked, and only one side of the exoplanet is bathed in sunlight.