AVATAR is a single-stage reusable spaceplane capable of horizontal takeoff and landing, being developed by India's Defense Research and Development Organization along with Indian Space Research Organization and other research institutions; it could be used for cheaper military and civilian satellite launches. According to the Designers, Hyperplane projects of the 1980's - the X-30, Tu-2000 etc, failed due to their immense weight. Hence it is the weight which is the promising aspect of AVATAR. It is planned to be the size of a MiG-25. AVATAR was first announced in May 1998 at the 'Aero India 98' exhibition held at Bangalore.
The first Indian planetary mission to moon, Chandrayaan-1, launched on 22nd October, 2008, with a suite of Indian and International payloads on board, collected very significant data over its mission duration of close to one year. This mission was a huge success. Here we present some of the achievements of Chandrayaan -1.
Year 2100, ISRO, s robotic probe is conducting experiments in keiuper belt outside the solar system. Suddenly the probe detects some unusual signals. Scientists at ISRO confused, they have no idea where did these signals came from. The disturbance in communication between ground station and robotic probe is increasing. All the radar stations are pointed in the direction of the robotic probe. Within matter of minutes Scientists found huge electromagnetic wave patterns. ISRO concluded probably some kind of communication system, but who are they? The whole world turned towards that what they found was shocking news. A fleet of alien crafts rapidly approaching earth, is this is the end of Homo sapiens?
The above described scenario is not unlikely. In this vast universe there is all the possibility of an advanced civilization. What we do if that alien civilization attack us. In the present technological advancement is not enough to counter an alien threat. But in the future surely we develop something to counter an alien invasion. Here is a brief idea about countering an alien attack.
Every enemy has a weakness we should find out what it is. To repeal an alien attack we need three things.
1)Intelligence: we need to know who they are , what their strength and weakness
2)Defense : we need to reinforce the lines of defense to protect earth
3)Attack strategy : if they do land on earth we need weapons & strategy to counter them
We need an early warning system to detect the aliens. Radars are the best choice for that. We need to monitor the entire solar system; the intruders will come in any direction. But there is a problem the area of solar system is 6*10 26 sq miles. We can’t monitor this much area using the radar systems on the earth. But there is a solution. The outer edge of the solar system is the aur cloud a region of huge comets. We can use those comets as radar stations & can create a network of radar system that can monitor the entire solar system and can monitor the intruders in every direction.
Still there is some problems these alien crafts may be stealthy even humans are using stealth aircrafts , ships etc. maybe we can find the larger mother ships but it is not easy to find the tiny alien probes dispatched from the mother ships especially most of the outer space radars using high frequency electromagnetic waves. Hmm we need something else to find the alien ships. To detect the stealth alien ships we can use another frequency called X-rays. X rays are very small i.e.; they are billions of times smaller than the radar signals they can pick up an object in the size of sand X rays are ideal solution for finding alien intruders and also we can create ultra sensitive X ray scanners on board robots and place them in aur clouds & can fly through the comets and scan for tiny alien probes.