Sun, Mercury, Venous, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. The IAU has changed the definition of "planet" so that Pluto no longer qualifies. There are now officially only 8 planets in our solar system. nineplanets.org
Inflation, the instantaneous expansion of the universe from a sub-atomic point, represents the link between the quantum world and relativity - a way to potentially reconcile the two seemingly different branches of physics
The teacher-approved K12 app. Try our language arts and math practice. The pioneering IXL app puts math and language arts practice right at your fingertips. Boasting all the functionality of IXL’s website as well as a host of unique tablet-only features, it engages kids by making practice really feel like play. Download it for iPad, Android and Kindle today for free.
SOLAR VIEWS - - Views of the Solar System presents a multimedia adventure unfolding the splendor of the Sun, planets, moons, comets and asteroids. Discover the history of space exploration, rocketry, early astronauts, space missions, and a large image/video archive. - - An educational tour of the solar system offers images and information about the Sun, planets, moons and other elements of the solar system. The site is available in English, Spanish, Portuguese, French, or German.