Current Affairs 2017 - June

Current Affairs 2017 (June) with Latest Current Affairs for Banking, SSC, CLAT, UPSC, State PCS, IBPS and other Competitive Examinations. Current Affairs Today – June 2017 with news summary on current events of national and international importance.

NASA developing first asteroid deflection mission

NASA is developing Double Asteroid Redirection Test (DART), the first-ever mission that will deflect a near-Earth asteroid.

The mission will help to test the systems that will allow mankind to protect the planet from potential cosmic body impacts in the future.

Key Facts

The DART will be built and managed by the John Hopkins Applied Physics Laboratory (APL). It will be NASA’s first mission to demonstrate kinetic impactor technique.  The target for DART is an asteroid called Didymos that will have a distant approach to Earth in October 2022 and then again in 2024.

The asteroid Didymos (Greek word for twin) is an asteroid binary system that consists of two bodies: Didymos A (about 780 metres in size), and Didymos B (about 160 metres in size), smaller asteroid orbiting Didymos A. DART will impact only the smaller of the two bodies, Didymos B.

After launch, DART will fly to Didymos and use an APL- developed onboard autonomous targeting system to aim itself at Didymos B. The refrigerator-sized spacecraft will strike the smaller body at a speed about 6 km/s i.e. about nine times faster than a bullet.

Earth-based observatories will observe the impact and the resulting change in the orbit of Didymos B around Didymos A. It will allow scientists to better determine the capabilities of kinetic impact as an asteroid mitigation strategy.

Didymos asteroid system

The Didymos asteroid system has been closely studied since 2003. It has been classified as potentially hazardous asteroid. Its primary body is a rocky S-type object, with composition similar to that of many asteroids. The composition of its small companion, Didymos B is unknown, but its size is typical of asteroids that could potentially create regional effects should they impact Earth.

Kinetic impact technique

This technique involves sending one or more large, high-speed spacecraft into the path of an approaching near-earth object to shift its orbit to defend against future impact.  It works by changing the speed of a threatening asteroid by a small fraction of its total velocity. This is done well before the predicted impact so that this small velocity adds up over time to a big shift of the asteroid’s path away from Earth.

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Reliance Jio launches world’s longest 100Gbps submarine cable system

Mukesh Ambani led Reliance Jio Infocomm has launched the Asia-Africa-Europe (AAE-1) submarine cable system. It is claimed to be world’s longest 100Gbps technology-based submarine system.

It stretches for over 25,000km from Marseille, France to Hong Kong. It will have 21 cable landings across Asia and Europe. Using it, Jio will continue to offer its customers the most exceptional high speed internet and digital service experience.

Key Facts

The AAE-1 project is a combination of leading telecom service providers from Europe, the Middle East and Asia. It will seamlessly link with other cable systems and fibre networks to deliver direct access to all global markets.

It will feature diversified Points of Presence (PoP) in Asia (Hong Kong and Singapore), with three onward connectivity options in Europe (France, Italy and Greece). The cable system will pass through critical hubs, serving the demand for video centric data bandwidth that supports all types of communications, applications and content within India and beyond.

The advanced design and route of AAE-1 system will offer one of the lowest latency routes between Hong Kong, India, Middle East and Europe. Using it, Reliance Jio will provide the Network Operations & Management for AAE-1 Cable System. Its Network Operations Center (NOC) will use a state of the art facility in Navi Mumbai.

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