Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA - 晨昏线航天

Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA — Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA 图：popsci.com

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Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA

A series of V-shaped wave clouds appears over an ocean filled with pieces of sea ice.

Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA

A series of V-shaped wave clouds appears over an ocean filled with pieces of sea ice.

A technician in a white clean-room suit and blue gloves uses a small flashlight to inspect a spacecraft instrument inside a dark testing chamber. Colorful wires and metallic components surround the instrument.

A small ice- and snow-covered island with an active volcanic crater at its center is surrounded by drifting pieces of sea ice. A thermal signal and small plume appear in the crater, and ash darkens the snow on the volcano’s northern slopes.

Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA

Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA

Thick gray plumes of smoke stream from large numbers of fires scattered across the island of Borneo.

NASA's Nancy Grace Roman Space Telescope will survey vast swaths of sky during its five-year primary mission. During that time, scientists expect it to see an incredible number of new objects, including stars, galaxies, black holes and planets outside our solar system, known as exoplanets. This infographic previews some of the discoveries scientists anticipate from Roman's data deluge. Image: NASA's Goddard Space Flight Center/ Scott Wiessinger (eMITS)/Ashley Balzer (eMITS)/Julia Shepherd (Inter

图：popsci.com

Teams inside the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida encapsulate the agency’s Nancy Grace Roman Space Telescope within the payload fairing on Friday, August 21, 2026, ahead of mating to a SpaceX Falcon Heavy rocket. Encapsulation shields the spacecraft during rollout, ascent, and the early phases of flight. Image: Kennedy Space Center / NASA

Ice in a broad Alpine basin connects with a short, narrow stretch of glacial ice in the valley below through one small icefall. Lakes fill much of the valley beyond the glacier’s terminus.