Twin TROPICS satellites set to be lofted into orbit

Rocket Lab’s launch of NASA’s second pair of TROPICS hurricane research satellites, reassigned from Astra following a launch failure last year, has been rescheduled for Sunday (U.S. time) after a delay due to unfavorable weather at the the company’s New Zealand spaceport. Originally planned as a series of six satellites, the first two were lost in an Astra launch failure last year, and the remaining four were subsequently switched to Rocket Lab, which could meet NASA’s requirement to have its TROPICS fleet operational in time for this year’s Northern Hemisphere storm season. More

(Source: SpaceFlight Now - May 7)