NASA is to host a major press conference on Wednesday to reveal a 'discovery beyond our solar system'.
The space agency says the secretive event, will 'present new findings on planets that orbit stars other than our sun, known as exoplanets'.
It raises hopes that NASA could reveal details of exoplanets capable of holding life.
The space agency says the event, will 'present new findings on planets that orbit stars other than our sun, known as exoplanets' at the event - but all other details have been kept secret ahead of the announcement happening at 1pm ET on Wednesday.
Researchers recently gave an incredible glimpse of a nearby system with a mesmerising new animation revealing four alien worlds orbiting a star 129 light years away.
The planets, each more massive than Jupiter, are circling a bright young star that lies in the constellation Pegasus.
It comes as the result of seven years of observations at the W.M. Keck Observatory in Hawaii, providing a captivating glimpse at four planets whose orbital periods are in nearly precise ratio with each other.
These objects have vastly different orbital periods, from 40 years to more than 400.
But, researchers believe they are in a one-two-four-eight resonance with each other.
This means their individual orbital periods are in nearly precise ratio with the others
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