Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions. - 晨昏线航天

Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions. — Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions. 图：NASA · NASA Image and Media Guidelines

署名图：NASA

许可证NASA Image and Media Guidelines

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Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions.

Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions.

Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions.

Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions.

Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions.

Water in Lake Powell is at record-low levels and looks like a wide river winding through a light orange desert landscape. The Glen Canyon Dam and the town of Page, Arizona, are visible in the lower left.

Dark blue water in Lake Powell fills several bays and branching canyons amid a light orange desert landscape. The Glen Canyon Dam and the town of Page, Arizona, are visible in the lower left.

Four full-disk images of Earth are arranged in a two-by-two grid. The December image on the upper left shows the South America centered with Antarctica visible. The June image features parts of North America and Arctic sea ice that were not visible in December. The March and September images have South America and North America in more intermediate positions.

Water in Lake Powell is at record-low levels and looks like a wide river winding through a light orange desert landscape. The Glen Canyon Dam and the town of Page, Arizona, are visible in the lower left.

STEREO spacecraft in orbit at the Sun.

This image is an infographic titled "Heliophysics Missions", illustrating the locations and primary operations of NASA's heliophysics mission fleet across the solar system. The graphic features a large illustration of the Sun on the left and Earth on the right, with various labeled spacecraft icons positioned in relation to them, such as the Parker Solar Probe near the Sun and others like the Solar Orbiter, STEREO, SDO, and TIMED shown in different orbits or locations. The text explains that the

Air temperatures in the United States are depicted in white to light blue (cooler) and orange to red (warmer). An area of red, indicating temperatures around 100 degrees Fahrenheit, covers Texas and several states to the east and northeast.