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Hottest planet in galaxy spotted
Published: 18 January, 2011, 14:17
Edited: 09 February, 2011, 23:06
Illustration by David Aguilar
The hottest-ever planet found by scientists so far is WASP 33 b orbiting a star some 380 light-years away in the constellation Andromeda.
The planet discovered in 2010 is a so-called hot Jupiter, a giant gas planet that has migrated very close to its star over time. Its temperature is estimated at a whopping 3,200 degrees Celsius. For comparison, the temperature of the hottest planet in the Solar System, Venus, is just 460 degrees Celsius.
WASP 33 b is described in a new paper submitted to Monthly Notices of the Royal Astronomical Society by astronomers from Keele University and the University of St Andrews in Scotland and also the Roque de los Muchachos Observatory in the Spanish Canary Islands.
11.01.2011, 10:44
2 comments
Space observatory finds smallest exoplanetNASA’s orbital telescope Kepler has found the smallest-ever planet outside of the Solar System. |
26.01.2011, 14:43
12 comments
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Some scientists have suspected that orbital paths for planets move for some time.
Several Moons in the outer planets are believed to be captured objects and the eccentric orbit of Pluto could be from a collision or a failed capture too.
The main evidence for the idea of migrating orbits is the discovery of gas giant planets near stars... general planet forming theory suggests that gas giants can only form in the cold of space well away from their stars and that an gas giants found near their starts must have formed further out and migrated inwards.
@GarryB
Modern simulations point the other way. That is, that there was way to little mass in the outer parts of the stellar disk to make those outer giants. Theories say that gravitanional interactions between the planets have throwed them outwards, but those (theories) don't have much proof.