360° Coverage : Tiniest planet shows sun-like stars can host smaller planets

Tiniest planet shows sun-like stars can host smaller planets

Sydney, Feb 21 (IANS) Kepler-37b, the tiniest planet ever spotted, demonstrates that sun-like stars in our galaxy are capable of hosting much smaller planets than anything detected so far, say researchers.

Feb 21 2013, 12:40am CST | by

Tiniest planet shows sun-like stars can host smaller planets
Photo Credit: OMAR TORRES, Getty Images

Sydney, Feb 21 — Kepler-37b, the tiniest planet ever spotted, demonstrates that sun-like stars in our galaxy are capable of hosting much smaller planets than anything detected so far, say researchers.

Tim Bedding, professor and head of the University of Sydney School of Physics and Dennis Stello, Australian Research Fellow at the school, contributed to the discovery effort of an international team.

"That we have found one of these small and hard-to-detect planets suggests that they are abundant around other stars and lends weight to the belief that as planet size decreases their occurrence increases exponentially," said Stello, the journal Nature reports.

Kepler-37b is an exoplanet, or planet located outside the solar system, and is estimated to be a similar size to Earth's moon, which is only 3,475 kilometres in diameter, according to a Sydney statement.

Owing to this extremely small size and its highly irradiated surface, Kepler-37b is believed to be a rocky planet with no atmosphere or water, similar to Mercury.

The Kepler spacecraft made the Kepler-37b finding possible. The spacecraft was launched in 2009 with the goal of determining how often rocky planets occur in the habitable zone around sun-like host stars in our galaxy.

Over the course of 978 days of observations by the Kepler spacecraft, transit signals of three planets of the star Kepler-37, a slightly cooler and older star than our sun, were identified.

"Since the discovery of the first exoplanet we have known that other planetary systems can look quite unlike our own, but it is only now, thanks to the precision of the Kepler space telescope that we have been able to find planets smaller than the ones we see in our own solar system," said Bedding.

IANS

Source: IANS

 
 
 

<a href="/latest_stories/all/all/8" rel="author">Luigi Lugmayr</a>
Luigi is the founding Chief Editor of I4U News and brings over 15 years experience in the technology field to the ever evolving and exciting world of gadgets. He started I4U News back in 2000 and evolved it into vibrant technology magazine.
Luigi can be contacted directly at ml@i4u.com. Luigi posts regularly on LuigiMe.com about his experience running I4U.

 

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