The properly formatted address including the postal code will display. If you do not see your address in the list of suggestions, continue entering your complete address, including city and province, to display more suggestions. Once youâve found the postal code youâre looking for, you have the option to print a label.
Exoplanet: Kepler-10b Description The first rocky planet to be discovered by NASA's Kepler Mission, Kepler-10b is an exoplanet 1.4 times the size of our Earth. An exoplanet is any identified planet outside of our own Solar System. As of June 2013, there have been 866 exoplanets identified, located around 671 stars, nearly all within the Milky Way Galaxy. Kepler-10b has a density 4.6 times that of Earth, or similar to an iron dumbbell.
Measuring the mass of such a small planet based on its gravity was another level entirely, but astronomers have done just that for an exoplanet fifty percent the size of Earth. Researchers using NASA's Kepler mission data have measured the mass of a Mars-size exoplanet that is about one tenth the mass of Earth. Called Kepler-138b, it is the first exoplanet smaller than Earth to have both its mass and size measured. This significantly extends the range of planets with measured densities. 1  The artistic concept shows the planetary system harboring Kepler-138b, the first exoplanet smaller than Earth with both a mass and size measurement. The sizes of the planets relative to the star have been exaggerated.