Transiting Extrasolar Planets
Any planet is an extremely faint light source compared to its parent star. In addition to the intrinsic difficulty of detecting such a faint light source, the light from the parent star causes a glare that washes it out. For those reasons, fewer than 5% of the extrasolar planets known as of November 2011 have been observed directly.
Instead, astronomers have generally had to resort to indirect methods to detect extrasolar planets. At the present time, several different indirect methods have yielded success.
Other articles related to "transiting extrasolar planets, planet, planets":
... See also List of transiting extrasolar planets While the above methods provide information about a planet's mass, this photometric method can determine the radius of ... If a planet crosses (transits) in front of its parent star's disk, then the observed visual brightness of the star drops a small amount ... the star dims depends on the relative sizes of the star and the planet ...
... too close (within the Roche limit) to these stars by gravitational interaction with larger planets and were torn apart by star's tidal forces ...
Famous quotes containing the word planets:
“Why are all these dolls falling out of the sky?
Was there a father?
Or have the planets cut holes in their nets
and let our childhood out,
or are we the dolls themselves,
born but never fed?”
—Anne Sexton (19281974)