«We know small planets are common, so if Kepler sees a small -
looking planet candidate and it passes the strict internal vetting, it's more likely to be a planet than a false positive because it's hard to mimic that signal with anything else.»
Not exact matches
Only after great deliberation at nasa did we decide that it was in the best interest of science to
look really hard at those 400 stars that have interesting
candidate planets.
At a NASA press conference today that also unveiled more than 500 other new
candidate planets, Kepler's mission scientists announced they have finally found and confirmed what
looks to be the mission's long - sought holy grail, a near - twin of Earth called Kepler 452 b.
The shaky status of Kepler's finds, the confusing mixture of «
candidates» and «confirmed»
planets, comes from how it
looks for worlds in the first place.
Preferred Hosts for Short - Period Exoplanets In an effort to learn more about how
planets form around their host stars, a team of scientists has analyzed the population of Kepler - discovered exoplanet
candidates,
looking for trends in where they're found.
The study, which took five years, only
looked for
planets that orbited rather close to their parent stars (unless the
planet is very large the signal from its gravitational hug is too slight to detect with today's technology) so this batch won't produce good
candidates for worlds with liquid surface water that might be suited for life.
Kepler, which NASA said has discovered more than 80 % of all known confirmed exoplanets and
candidate planets identified to date, uses what it known as the transit method, which means that it tracks stars over extended periods of time
looking for brief periods of dimming.