Planets too have “fat days”June 21st, 2009 - 3:33 pm ICT by ANI
London, June 21 (ANI): Humans are not the only ones cribbing over weight issues, some planets too go through a “fat” stage that swells their waistlines temporarily.
“Astronomers have found a lot of planets whose sizes cannot be explained by standard theory,” says Laurent Ibgui of Princeton University.
The difference between predicted and measured widths of so-called “hot Jupiters” can be 30 per cent or more, reports New Scientist.
According to the study, which used a computer simulation, the effect can be temporarily halted in hot Jupiters that begin life in highly elliptical orbits.
Alternatively the planets are squeezed and stretched as they circle their stars, resulting in “tidal heating” that warms the gas inside the planet.
This, thereby, counteracts the cooling effect, inflating the planet.
Eventually, though, the planet’s orbit will become more circular, and the hot Jupiter resumes shrinking.
Ibgui presented the research at an American Astronomical Society meeting in Pasadena, California, last week. (ANI)
- Erratic orbits of neighbouring planets may make life sustenance difficult - May 25, 2010
- Moons around 'hot Jupiter' can't exist due to gravitational pulls - Aug 18, 2010
- NASA launches Jupiter probe - Aug 05, 2011
- How 'cosmic electric toaster' puffs up planets to gigantic size - Mar 09, 2010
- Hot Jupiter exoplanet discovery sheds light on evolution of planetary systems - Jan 16, 2011
- Hubble discovers new, all-water planet - Feb 22, 2012
- Astronomers discover darkest known planet - Aug 13, 2011
- Trio of planets found orbiting Sun-like star might harbor life - Dec 14, 2009
- Indian American astronomer finds diamond-studded planet - Dec 09, 2010
- 'Hottest' planet found has scorching heat of 3,200 Degree C - Jan 28, 2011
- Could Jupiter solve the mystery of The Star of Bethlehem? - Dec 22, 2010
- Scientists discover planets around elderly binary star - Oct 23, 2010
- Strange 'hot spot' seen on distant exoplanet - Oct 20, 2010
- First ever proof of star devouring planet - Aug 21, 2012
- Jupiter came closest to Earth on Monday - Sep 21, 2010
Tags: american astronomical society, american astronomical society meeting, computer simulation, elliptical orbits, hot jupiters, june 21, jupiter, london, new scientist, orbit, pasadena california, planets, princeton university, waistlines