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A series of suborbital tests carried out by NASA in the 1960s to evaluate various types of heat ablative materials (ablation) and atmospheric reentry technology, particularly in preparation for the Apollo program. The nosecones of the Scout rockets used in these tests were coated in heat-shield ablators and then caused to reenter the atmosphere at around 28,000 km/h - the speed of reentry after a lunar excursion.

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During reentry, the space shuttle typically reaches speeds of around 17,500 miles per hour (28,000 km/h). This high speed is necessary to overcome Earth's gravity and safely return the shuttle to the surface.

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9mo ago
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Q: How fast is the space shuttle upon reentry?
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