Not exact matches
With the help of a starshade, they could
see a «
planet» 100 million times
fainter than the pseudostar.
Kasting adds that far - out
planets will be
fainter and harder to
see than close - in
planets, so finding these distant worlds will be more difficult, as will studying their atmospheres.
Called VISIR, the instrument will be equipped with a coronagraph — a mask to block out the light of the star so that the much
fainter planets can be
seen.
Although the
planets are too
faint to be
seen directly, their motions cause the star's spectrum to wobble back and forth across the digital detector of an astronomical telescope.
Unfortunately, the fact that
planets can be
seen only when they happen to be in the line of sight between star and telescope means that many stars must be observed, and Kepler increases its stellar haul by monitoring even the
faintest stars.
The sun is directly behind the
planet — an alignment not visible from Earth — which allowed astronomers to discover two
faint outer hoops, never before
seen, and to observe in unprecedented detail the microscopic particles that make up the rings.
This brightening fluctuation can reveal the
planet, which can be too
faint, in some cases, to be
seen by telescopes.
«We were able to separate the light of the
faint planet from the light of the much brighter star and to
see that they were both growing and glowing in this very distinct shade of red.»
We are now
seeing planets in the blackness around other stars, very much in the same way he discovered the
faint moon companions around Jupiter.
Seeing the color black in fact is a comforting affirmation that I'm searching in the right direction, for a
planet must be so
faint as to appear to not be there at all.
«We hope to approach the photon noise limit, which will give us contrast ratios close to 10 - 8, allowing us to
see planets 100 million times
fainter than the star.
GPI can
see planets a million times
fainter than their parent stars.