After a brief hiatus due to technical difficulties, Nasa’s venerable Hubble Space Telescope is poised to recommence its scientific operations on Friday. The iconic observatory had entered a precautionary safe mode on November 23 when one of its gyroscopes, essential for orienting the telescope, began transmitting inaccurate data. As per reports, a gyro is essentially a pair of rapidly spinning wheels or a rotary device that helps a spacecraft keep its orientation in space. Hubble has four gyroscopes, and if