Photo Agency - Astronomy - Space - Nature

> Artist's impression of a transiting exoplanet

Artist's impression of a transiting exoplanet

author: Nasa/ESA/Novapix

reference: a-exo99-00600

Image Size 300 DPI: 33 * 25 cm

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 search for planets across the galaxy by measuring periodic changes in a star's luminosity. The first class of exoplanets 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.

Keywords for this photo:

ASTRONOMY - EXOPLANET - EXTRASOLAR PLANET - HOT JUPITER - ILLUSTRATION - PLANET - STAR - TRANSIT -