Science and Technology Current Affairs – 2018
Latest Science & Technology Current Affairs 2015-2016; current developments in Science and Technology 2015-2016 all important national / international updates in science and tech and events for the year 2015-2016.
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The winter solstice 2018 took place on December 21. It is the time of the year when one of the Earth’s poles has its maximum tilt away from the Sun. Winter Solstice happens twice yearly, once in each hemisphere.
- The term ‘solstice’ is derived from two Latin words “sol” which means sun, and “sistere” meaning standstill.
- Winter Solstice marks the shortest day of the year in the northern hemisphere.
- On Winter Solstice the sun appears at its most southern position, directly overhead along the Tropic of Capricorn.
- On the other hand Winter Solstice marks the longest day of the year in the Southern hemisphere.
- Even though the solstice gets an entire day of recognition, it happens in an instant when the North Pole is at its farthest tilt of 23.5 degrees away from the sun. As a result the North Pole would be beyond the sun’s reach, and plunges it into total darkness.
- At Winter Solstice the sun had reached its southernmost point in the sky in the Northern Hemisphere and afterwards will begin its trek northward in the sky.
- After Winter Solstice the days will be longer in the Northern Hemisphere.
The 2018 Winter Solstice is special because it will be followed the next day by a full moon, called the Cold Moon, which will be visible in the night with the Ursid meteor shower.
InSight, NASA’s new Mars lander, has set up its first instrument on planet Mars. The instrument placed by InSight, which landed on Mars on 26th November, is a quake monitor (seismometer) that will listen for quakes and wobbles.
It is the first time that a scientific instrument has ever been placed on another planet’s surface. InSight will also put a wind cover over the seismometer next month and initiate a new experiment.
InSight or the Interior Exploration using Seismic Investigations, Geodesy and Heat Transport mission of NASA is a robotic lander that seeks to gather information about the deep interior of Mars. InSight mission was launched by NASA on 5 May 2018 and landed on Mars on 26 November 2018 making a journey of about 483 million km.
The successful execution of Insight mission will enable humans to have a better understanding of the evolution of the Solar System’s terrestrial planets – Mercury, Venus, Earth, Mars – and Earth’s Moon. InSight’s primary tasks include placing a seismometer, known as SEIS, planet Mar’s dusky red surface to measure the seismic activity. SEIS will also provide accurate 3D models of the interior of Mars. To study Mars’ early geological evolution, InSight also plans to set up a heat probe called HP3 on Mars that will measure internal heat flow.