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Bookmark or Share- Overview | What is an Exoplanet? – Exoplanet Exploration: Planets ...An exoplanet is any planet beyond our solar system. Most orbit other stars, but free-floating exoplanets, called rogue planets, orbit the galactic center and are untethered to any star. Overview. Most of the exoplanets discovered so far are in a relatively small region of our galaxy, the Milky Way.
- Scientists Discover First of a New Class of Extrasolar PlanetsAstronomers announced today the first discovery of a new class of planets beyond our solar system about 10 to 20 times the size of Earth - far smaller than any previously detected. The planets make up a new class of Neptune-sized extrasolar planets.
- Exoplanets | HubbleSiteOnly recently have our technology and techniques been up to the task of finding exoplanets. Telescopes on the ground and in space have uncovered thousands of planets beyond our solar system. Hubble is helping to answer questions such as: Are there habitable planets outside our solar system? What does Hubble tell us about exoplanets?
- Extrasolar planet | Definition, Detection, Properties, & FactsExtrasolar planet, any planetary body that is outside the solar system and that usually orbits a star other than the Sun. Extrasolar planets were first discovered in 1992. More than 5,000 are known, and almost 9,000 await further confirmation. Learn more about extrasolar planets in this article.
- In Depth | What is an Exoplanet? – Exoplanet Exploration: Planets ...An exoplanet, or extrasolar planet, is a planet outside of our solar system that usually orbits another star in our galaxy. Exoplanets – planets outside our solar system – are everywhere. But why do we study them?
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