The three satellites, designated Kosmos 2581, 2582 and 2583, launched on a Soyuz-2.1V rocket from Plesetsk cosmodrome early on Feb. 2 (GMT). Since then, the satellites, whose purpose is unknown, have ...
In 1895, when German physics professor Wihelm Röntgen was experimenting with cathode rays, he accidentally discovered what we know today as X-rays. Realizing the technology could benefit the medical ...
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