The Tiny Planet Hunter of NASA has Gone Unanswered: It is just a briefcase-sized spacecraft, a preparation of NASA in collaboration with Massachusetts Institute of Technology, ASTERIA is a planet hunter launched back in 2017. It helped NASA in finding exoplanets revolving in the space. Now, NASA's Jet Propulsion Laboratory declared that this CubeSat has gone dark and become uncontactable. NASA has lost some good and helpful spacecraft since its existence. Now, this is just another add on to the loss that the space agency could only mourn on.
ASTERIA, the CubeSat was launched back on November 20, 2017. NASA believed that such kind of CubeSats could help in a larger sense someday. ASTERIA was designed to find stars and planets other than ours by measuring the brightness beaming from a distant star. It finds exoplanets by analyzing the dips in the light from a star.
Dips are the commonly visible result from a star when a planet is transiting the light of the star reaching the vision of the observing object. To put it simply, ASTERIA finds a planet when visible light form a start gets blocked by the planet revolving around the star to reach the satellite observing the light.