Artist's impression of a transiting extrasolar planet
This is an artist's impression of a Jupiter-sized planet passing in front of its parent star. Such events are called transits. When the planet transits the star, the star's apparent brightness drops by a few percent for a short period. Through this technique, astronomers can use the Hubble Space Telescope to search for planets across the galaxy by measuring periodic changes in a star's luminosity. The first class of extrasolar planets found by this technique are the so-called "hot Jupiters", which are so close to their stars they complete an orbit within days, or even hours.
About the Image
|Release date:||4 October 2006, 19:00|
|Size:||4000 x 3000 px|
About the Object
|Type:||• Unspecified : Planet : Special Cases : Hot Jupiter|