The Indian Space Research Organisation (ISRO) is developing a new heavy-lift rocket called the Next Generation Launch Vehicle (NGLV). This ambitious project aims to create a more powerful and versatile launch system that will eventually replace the current Polar Satellite Launch Vehicle (PSLV) and Geosynchronous Satellite Launch Vehicle (GSLV) families.
The NGLV project is focused on incorporating cutting-edge technologies to enhance performance, reduce costs, and increase launch frequency. The core advanced technology being tested and developed for the NGLV includes:
By integrating a reusable booster stage with a powerful semi-cryogenic engine, ISRO aims to make its future launch capabilities more efficient and economical, competing effectively in the global commercial launch market.
While other technologies exist in rocketry, they are not the primary focus for ISRO's NGLV as described:
Therefore, the combination of a reusable booster stage and a semi-cryogenic engine represents the key advanced technology driving ISRO's NGLV development.
Which of the following ISRO initiatives, launched with the vision of "Catch them young", aims to introduce school students to space science and technology?
Consider the following statements:
1. The Aditya-L1 mission was launched to replace the INSAT series of weather satellites.
2. Aditya-L1 successfully entered a Halo Orbit around the Lagrange Point 1 (L1) to observe solar activity.
Which of the statements given above is/are correct?
Who gave the expanding universe hypothesis?
With reference to `Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct?
1. Other than USA and Russia, India is the only country to have launched a similar observatory into space.
2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth.
Select the correct answer using the code given below.
Consider the following statements: The Mangalyaan launched by ISRO
1. is also called the Mars Orbiter Mission
2. made India the second country to have a spacecraft orbit the Mars after USA
3. made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt
Which of the statements given above is/are correct?
Which of the following pair is/are correctly matched?

Select the correct answer using the code given below.
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
1) The orbit is geosynchronous.
2) The orbit is circular.
3) The orbit lies in the plane of the Earth's equator.
4) The orbit is at an altitude of 22,236 km
Select the correct answer using the codes given below:
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth