General Awareness

SCIENCE & TECHNOLOGY - August 2015

Aug 2015

May 02, 2019

India's Second Mission to Moon Delayed

According to Indian Space Research Organisation (ISRO), India's second mission to the moon has been delayed again and will be launched during the July 9 to 16 window period.
Earlier, Chandrayaan 2 was to be launched between March 25 and April end.
For the required trajectory, the satellite can be launched only during certain window periods and since the one in April has been missed, Chandrayaan 2 will be launched during the next suitable window in July. This is a very complex mission and the earlier dates were estimates, but the procedures took longer than expected.
The lander is expected to reach the surface on September 6.

May 01, 2019

Record Solar Hydrogen Production

Researchers have created a smart device capable of producing large amounts of clean hydrogen.
By concentrating sunlight, their device uses a smaller amount of the rare, costly materials that are required to produce hydrogen, yet it still maintains a high solar-to-fuel efficiency.
Their research has been taken to the next scale with a pilot facility installed on the EPFL campus.
The scientists estimate that their system can run for over 30,000 hours, or nearly four years, without any part replacements, and up to 20 years if some parts are replaced every four years.
Their solar concentrator turns and follows the sun across the sky in order to maximise its yield.
As per Sophia Haussener, the head of the LRESE and the project lead, in sunny weather, the system can generate up to 1 kilogram of hydrogen per day, which is enough fuel for a hydrogen-powered car to travel 100 to 150 kilometers.

Wynk Tube Music App

Bharti Airtel launched a music application Wynk Tube – an extension of its existing Wynk Music app.
Wynk Tube will allows users to stream audio and video of popular tracks within the same interface.
Users can also instantly switch between audio and video mode of their favourite tracks, with a single touch.
The service will be free for Airtel subscribers. Non-Airtel users will need to pay Rs. 99 a month, post a trial offer of 30-day free usage.

Apr 20, 2019

Bone Lost in Evolution Likely to Come Back

A primordial bone found in our primate ancestors but thought to be redundant and rapidly dwindling in humans — appears to have made a quiet comeback over the past century.
Scientists from Imperial College London have admitted they are stumped as to why the fabella, a small bone buried in a tendon behind the knee, is now three times more common than it was in the early 1900s.
They speculate that its reemergence could be linked to joint problems, and understanding why could help treat or protect those most at risk.
Fabellae are sesamoid bones, which means they grow in the tendon of a muscle — the knee cap being the largest example in the human body.

Apr 19, 2019

Universe's Most Ancient Molecule Detected

Scientists have detected the most ancient type of molecule in our universe in space for the first time ever.
Helium hydride ion (HeH+) was the first molecule that formed when, almost 14 billion years ago, falling temperatures in the young universe allowed recombination of the light elements produced in the Big Bang.

Nepal Launches its First Satellite

Nepal successfully launched its first satellite into space from the US to gather detailed geographical information of the Himalayan nation.
Developed by the Nepalese scientists, NepaliSat-1 satellite was launched from Virginia in United States.
Two Nepali scientists, Aabhas Maskey and Hariram Shrestha who are currently studying at Japanese Kyushu Institute of Technology, developed the satellite under the BIRDS project of their institute.

Apr 17, 2019

Earth-sized Planet Discovered

NASA's latest planet-hunting probe has discovered its first Earth-sized exoplanet orbiting a star 53 light-years away.
The Transiting Exoplanets Survey Satellite (TESS) also discovered a warm sub-Neptune-sized world in the same system.

Google Blocks Chinese App TikTok in India

Google blocked access to the hugely popular video app TikTok in India to comply with a state court's directive to prohibit its downloads.
The move comes hours after a court in southern Tamil Nadu state refused a request by China's Bytedance Technology to suspend a ban on its TikTok app, putting its future in one of its key markets in doubt.

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