An eclipse within the background binary would mimic a small
brightness dip in Kepler - 20.
If they were nearly the same, this would suggest that the cause was something opaque, like an orbiting disk, planet, or star, or even large structures in space» said Wright, who is a co-author of the paper, titled «The First
Post-Kepler Brightness Dips of KIC 8462852.»
But with needle - in - haystack projects, I always wonder whether they saw nothing because there was nothing to detect or because they missed the rare and
transient brightness dips that small KBOs would cause.»
Using additional observations from the 10 - meter Keck telescope on Mauna Kea, Hawaii, and from the 5 - meter Hale Telescope on Palomar Mountain in California, Johnson and his team could also confirm that the
observed brightness dips were indeed due to planets.
Kepler had already seen
periodic brightness dips in the faint light of the red dwarf star, but astronomers had not yet been able to rule out other possible explanations.
They can
detect brightness dips as small as 1 %, which is sufficient to find giant gaseous planets that are like our own Jupiter and Saturn.
Kepler scientists are interested in the brief moments when a star's
brightness dips — the telltale shadow of a planet passing in front.
Other features of the transit — its duration, how much light is blocked, and how quickly
the brightness dips — provide additional details such as the planet's diameter.
Even though the reality was much different, the fact remained that
the brightness dips that have been observed around KIC 8462852 were as high as 22 percent (much too high to have been caused by any transiting planets) and very chaotic in nature, giving credence to the notion that they could have indeed been the result of alien astro - engineering on a very large scale.