We are delighted that the NASA/MIT TROPICS pathfinder cubesat - launched on the 30th June into a polar orbit by SpaceX's Transporter 2 - is
operating well, and giving useful mm-wave images of the whole globe - three examples of which (at 92, 116 and 205 GHz) are below:
Thomas Keating had the privilege of designing and making the antenna.
There are a full details on NASA's www site here, with more technical details here - showing the progress of Ida
... and an explanatory video here
(Thanks to NASA for the images)