Not exact matches
John Asher Johnson, who
found the smallest
exoplanet to date, proves an invaluable guide in his book
about one of science's hottest fields
«Given the concerns
about our own environment and climate change,
finding an
exoplanet that might experience the runaway greenhouse much sooner than we will made us reflect on the Earth's near - and long - term prospects for habitability,» Jenkins says.
Almost 140
exoplanets have been
found in the past 7 years by indirect means, and there have been a few false alarms
about actual sightings.
Astronomers have been
finding exoplanets out in the cosmos for 25 years, and if we've learned anything
about all those planets, it's that a lot of different, weird kinds exist.
TESS will be able to search 350 times more area of the sky than Kepler can, and is expected to
find about 20,000
exoplanets in its first two years alone.
Previously, researchers had
found water only on
exoplanets that are
about the size of Jupiter.
More information
about exoplanets and NASA's planet -
finding program is at http://planetquest.jpl.nasa.gov.
Although many have been
found and they appear to be the most abundant type of
exoplanet in the galaxy, current telescopes can tell us little
about them.
So far it's
found 2,740 possible
exoplanets that fit the bill, and recent discoveries have the science community buzzing
about the odds of life elsewhere.
The oldest detected Kepler planets (
exoplanets found using NASA's Kepler telescope) are
about 11 billion years old, and the planetary diversity suggests that around other stars, such initially frozen worlds could be the size of Earth and could even provide habitable conditions once the star becomes older.
Although this is very exciting, the key thing to remember is that we are talking
about exoplanet candidates, which means Kepler has detected 1,235
exoplanet signals, but more work needs to be done (i.e. more observing time) to refine their orbits, masses and, critically, to
find out whether they actually exist.
Kepler's
finds at that time totaled 2,235 planets, with the number of overall
exoplanets discovered (by all observatories) totalling
about 3,200.
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.
We often discuss and talk
about exoplanets as isolated entities, but this discovery is a poster child for how important interactions between a planet and its host star can be, and a good reminder that planets are being
found in large and dynamic solar systems.
According to the predictions mission scientists have made for the telescope, it should be able to
find about 20,000
exoplanets, of which dozens should be
about the size of Earth.
Students learn
about the transit method for
finding planets and they use Kepler's 3rd law to determine whether the
exoplanet Kepler - 22b is habitable.