Obsolete
Obsolete refers to a technology, system, or equipment that is no longer in use or has been replaced by a newer and more efficient version. In the context of space and astronautical engineering, a technology or equipment can become obsolete due to various reasons such as advancements in technology, changes in mission requirements, or safety concerns. For example, the Space Shuttle program became obsolete due to its high cost of maintenance and the availability of more advanced and cost-effective launch vehicles. Obsolete technologies and equipment can pose a significant risk to space missions, and it is essential to identify and replace them with newer and more efficient alternatives to ensure mission success and safety.
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