• It is a communication satellite also known as South Asia Satellite.
• It was successfully launched by GSLV F09 launch Vechicle on May 5, 2017 from Satish Dhawan Space Centre in Sriharikota of Andhra Pradesh.
• It has 12 Ku band telecommunication satellite which benefits the SAARC nations except the Pakistan.
• The Partners Include
• Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal and Sri Lanka
• Of the 8 Members of the SAARC Nations Only Pakistan did not participate in this programme.

• It is a transport system in which magnetically levitating capsules are sent at high sppeds through the Vacuum
• The idea of Hyperloop was first proposed by Eden Musk.
• Through Hyperloop we can travel at a top speed of 1200 kmph.
• The world's first commercial hyperloop transportation system is to be built between Dubai and Abu Dhabi.

• Ballistic Missile Defence is a two layered interceptor missile system developed by DRDO.
• It consists of two missiles
• Prithvi Defence Vehichle - for intercepting targets in exo-atmosphere at altitude over 85 Km.

Einstein Ring is a deformation/distortion of a light from a source (like a star or galaxy) into a ring by the bending of the light rays (gravitational lensing) from the source due to a massive galaxy or a back hole known as the lens.

The bending of light by a gravitational body is known as Gravitational Lensing. It was first predicted by Einstein in 1912.

Android is a mobile operating system developed by an american company Google. Its architecture is based on Linux Kernal. It is primarily used in touchscreen devices like smartphones, tablets,etc., But nowadays more electronic devices like watches, Televisions, cameras and more were using the Android operating system.

Android Versions	Names
Android 1.0	Alpha
Android 1.5	Cupcake
Android 1.6	Donut
Android 2.0	Éclair
Android 2.2	Froyo
Android 2.3	Gingerbread
Android 3.0	Honeycomb
Android 4.0	Icecream Sandwich
Android 4.1	Jelly Bean
Android 4.4	Kitkat
Android 5.0	Lolypop
Android 6.0	Marshmallow
Android 7.0	Android N

LOON is a project by Google for providing internet access to remote areas using LTE (Long Term Evolution / 4G) technology in the floating balloons.

• The balloons are made to float in the stratosphere (20km Height) of the atmosphere where the wind speed is low.
• The Stratosphere consists of different layers in which the speed and the direction of the wind varies.
• So, we can change the position of the balloon just by varying the density and volume of the gases in it.
• It is powered by the solar panels in it.
• Each LOON was designed to provide the internet service to an area of radius of 20 km.

• India's First BVRAAM (Beyond Visual Range Air-to-Air Missile) developed indigenously by DRDO.

• Warhead: 15 kgs
• Range: 20 - 80 Kms
• All weather missile 
• Smokeless propulsion

1. IRNSS 1A - Launched via PSLV C22 [July 1st 2013]
2. IRNSS 1B - Launched via PSLV C24 [April 4th 2014]
3. IRNSS 1C - Launched via PSLV C26 [October 26th 2014]
4. IRNSS 1D - Launched via PSLV C27 [March 28th 2015]
5. IRNSS-1E - Launched via PSLV C-31 [Jan 20th, 2016]
6. IRNSS-1F -  PSLV C-32
7. IRNSS-1G - PSLV C-33