NASA on a tether: the space agency may be trying to do too much by trying to combine research with experimental technology

Article Abstract:

The disappointing outcome of a recent test of new space technology aboard the space shuttle Atlantis should teach NASA not to overburden shuttle crews by requiring them both to try out technology and carry on scientific research. The test involved an attempt to produce electricity and investigate the Earth's magnetic field by using a 12-mile-long tether to draw an Italian-made satellite through space. However, the crew's inability to deploy the satellite farther than 850 feet from the shuttle, obtain any electricity or magnetic data means that the $380 million experiment is a unfortunate failure.

Editorial, Research, Testing, United States. National Aeronautics and Space Administration, Space technology, Space tethers

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Crystal structure of the first three domains of the type-1 insulin-like growth factor receptor

Article Abstract:

IGF-I and IGF-II ligands share a common architecture with insulin, cross-reacting with IGF-1R and IR. IR is required for glucose homeostasis, and IGF-1R participates in normal growth and development, as well as malignant transformation. The epidermal growth-factor receptor (EGFR) group is closely linked to the IR group. The structure of the first three domains of IGF-1R is presented, determined to 2.6A resolution, showing how the IR sub group might interact with their ligands.

Observations, Epidermal growth factor, Epidermal growth factors, Insulin-like growth factor 1, Insulin-like growth factor I, Insulin-like growth factors, Somatomedins

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