The period of Delta Heavy IV is coming to an finish.For the final 64 years, United Launch Alliance’s (ULA’s) heavy-lift rocket has led a powerful profession lofting massive payloads into house. Nonetheless, on Tuesday (March 28), the rocket will elevate off one final time when it launches from House Launch Advanced-37 at Cape Canaveral House Power Station in Florida. The launch window opens at 1:40 p.m. ET (1740 GMT).Aboard the Delta Heavy IV rocket for the mission, generally known as NROL-70, will likely be a labeled payload being launched on behalf of the U.S. Nationwide Reconnaissance Workplace (NRO). The NRO not often discloses the character or capabilities of its spy satellites, and this explicit mission presents no exception.But, whereas the payload is a secret, the launch isn’t. You’ll be able to watch it reside right here at House.com, courtesy of ULA, beginning at 1:15 p.m. ET (1715 GMT).Associated: Delta IV Heavy rocket launches US spy satellite tv for pc on penultimate mission (video)A United Launch Alliance (ULA) Delta IV Heavy rocket is raised vertically on the House Launch Advanced-37 pad in preparation to launch the NROL-70 mission for the Nationwide Reconnaissance Workplace. (Picture credit score: United Launch Alliance)The particular nature of the spacecraft launching atop ULA’s Delta Heavy IV rocket at this time in fact stays a thriller, however we will assume it is a refined spy satellite tv for pc given the client. The NRO is an company inside the Division of Protection tasked with creating, constructing and working the USA’ surveillance satellites.A mission description printed by ULA states the payload aboard at this time’s launch launch will “strengthen the NRO’s potential to offer a wide-range of well timed intelligence data to nationwide choice makers, warfighters, and intelligence analysts to guard the nation’s important pursuits and assist humanitarian efforts worldwide.”Breaking house information, the most recent updates on rocket launches, skywatching occasions and extra!Along with the Delta IV Heavy, ULA plans on retiring one other one in every of its rockets: The workhorse Atlas V. The concept is to make approach for the corporate’s new Vulcan Centaur, which launched on its first mission on Jan. 8, 2024 when it despatched Astrobotic’s Peregrine lunar lander moonward.The Atlas V will preserve flying by means of 2029, nonetheless, as it’s already booked for missions to assist develop Amazon’s Venture Kuiper web constellation and ship Boeing’s Starliner crew capsule to the Worldwide House Station on its first launch, slated for no sooner than Might 1.