ACRIMSAT

Active Cavity Irradiance Monitor Satellite

past Mission

Type

Orbiter

Launch

Dec. 20, 1999

Target

Earth

Objective

Study total solar irradiance

AcrimSat spent 14 years in orbit monitoring Earth's main energy source, our Sun, and its impacts on our planet.

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NASA/JPL-Caltech/VTAD

AcrimSat Stories

Explore All AcrimSat (Active Cavity Irradiance Monitor Satellite) Stories

Article

7 min read

Monitoring Microorganisms

Article

1 min read

Hubble Sees a Spiral in a Furnace

Galaxy with golden center and barred swirling arms streaked with dark dust lanes.

7 min read

Monitoring Microorganisms

Article10 months ago

1 min read

Hubble Sees a Spiral in a Furnace

Article10 years ago

4 min read

Sun sets for a NASA solar-monitoring spacecraft

Article10 years ago

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The image is divided horizontally by an undulating line between a cloudscape forming a nebula along the bottom portion and a comparatively clear upper portion. Speckled across both portions is a starfield, showing innumerable stars of many sizes. The smallest of these are small, distant, and faint points of light. The largest of these appear larger, closer, brighter, and more fully resolved with 8-point diffraction spikes. The upper portion of the image is blueish, and has wispy translucent cloud-like streaks rising from the nebula below. The orangish cloudy formation in the bottom half varies in density and ranges from translucent to opaque. The stars vary in color, the majority of which have a blue or orange hue. The cloud-like structure of the nebula contains ridges, peaks, and valleys – an appearance very similar to a mountain range. Three long diffraction spikes from the top right edge of the image suggest the presence of a large star just out of view.

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