NASA’s SHIELDS Mission

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The SHIELDS Mission was launched by NASA from the White Sands Missile Range in New Mexico. The mission is to investigate light emitted by cosmic particles in the heliosphere.

Key Points:

• SHIELD is an Emission Line Dynamics Spectrometer for Spatial Heterodyne Interferometry. It can reach a maximum altitude of 300 kilometers.

• SHIELDS will investigate the origins of hydrogen atoms in outer space. These atoms contain equivalent amounts of fundamental particles such as electrons and protons. These interstellar hydrogen atoms cross the magnetic lines as their positive and negative charges balance each other.

• The project will monitor the paths of hydrogen atoms as they travel across the heliosphere.

• SHIELDS can look for light emitted by hydrogen atoms. It will determine how much these atoms' wavelengths extend or contract.