Today in History: 1961 The X-15 rocket plane under USAF Major Robert M White achieved a world record speed of 4,093 mph (Mach 6.04) and reached 101,600 feet (30,970 m or over 19 miles) altitudeBold, black and blazing fast: The North American X-15 was a pl. We stand with Ukraine to help keep people safe. Read 277 user reviews and compare with similar apps on MacUpdate.
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