NASA NTRS · 19760015991
Interstellar helium flow experiment MA-088
Abstract
The Apollo Soyuz Test Project Interstellar Helium Glow Experiment (MA-088) studied the motion of helium in the local interstellar medium as that medium passed through the solar system to determine several poorly known properties of the local interstellar gas. The instrument used was a photometer sensitive to two solar extreme ultraviolet spectral lines that are resonantly scattered by helium gas. The instrument surveyed the entire celestial sphere during a series of slow, rolling maneuvers by the Apollo spacecraft. The equipment operated properly, and usable data were obtained.
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Bowyer, S., Freeman, J., Paresce, F., Lampton, M., Margon, B.. 1976-02-01. Interstellar helium flow experiment MA-088. https://ntrs.nasa.gov/citations/19760015991
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