My Science School

 

 

Name the first Indian satellite launching vehicle (SLV).

SLV-3 was the first satellite launching vehicle developed in India. It was fabricated at the Vikram Sarabhai Space Centre, Thiruvananthapurum, and Kerala. It was later replaced by the augmented version ASLV.

 

 

 

 

 

 

 

 

 

 

 

Which was the satellite first launched by SLV-3?

Rohini-I launched in 10 August 1979 from Sriharikota (Andhra Pradesh) went into orbit but could not accomplish its mission due to some snags. A “stretched” version was launched successfully on 20 May, 1992.

 

 

 

 

 

 

 

 

 

 

Name the Indian satellite used exclusively for remote sensing?

Indian Remote-sensing Satellite (IRS). The first satellite IRS-1A went into a Sun-synchronous polar orbit on 19 March 1988 enabling it to concentrate on specific areas and register optical as well as radiation images.

 

 

Name India’s first operational multipurpose domestic satellite.

Insat-IA was launched on 10 April 1982 from USA with a mission to enhance communicational, meteorology, TV relay and radio broadcasting facilities.

Which was the first Indian satellite launched by space shuttle?

Insat-IB was launched on 30 August 1983 by space shuttle from Nevada Base, USA.

How are the Indian satellites controlled from Earth?

At the time of the launching of Insat-1, a network of ground-based communication facilities was developed all over India.

 

 

 

Name India’s first satellite.

India’s first satellite was Aryabhatta launched on 19 March, 1975 from the Baikanur cosmodrome in Kazakstan, U.S.S.R.

What was the mission of Aryabhatta?

The primary mission of Aryabhatta was the development of Indian expertise in satellite technology and control of a satellite in orbit. However, some experiments in communication, remote sensing and weather monitoring were also included.

 

 

 

 

 

 

What was India’s second satellite?

India’s second satellite was Bhaskara-I launched on 7 June 1979 from the USSR. The satellite was designed and built at the Satellite Centre, Bangalore and its primary mission was to collect information on India’s land, water, forest and ocean recourses. 

 

 

How did Albert Einstein revolutionize the theories of astronomy and physics?

Einstein posed simple questions that could have been asked centuries earlier. For example: “What do we mean when we say two events are simultaneous?” or “What happens when two objects approach each other at the speed of light?”

Paradoxes seemed to emerge everywhere if you could travel at the speed of light. By providing explanations for such paradoxes, Einstein unraveled the riddles of the Universe. He is noted chiefly for his General and Special Theories of ‘Relatively’ that hold that motion, time, distance, acceleration and gravitation are not absolute, but relative, to moving frames of reference. 

 

 

 

 

Who was Bhaskara, after whom India’s second satellite was named?

Bhaskara (1114-1185 A.D.) was a famous Indian mathematician.

 

 

 

 

 

 

 

 

 

 

Which Indian scientist predicted the hydrogen line in the solar spectrum, X-ray emission from the Sun and molecules existing in interstellar space?

Maghnad Saha (1893-1956).

 

 

What were the other contributions of Fredrick Herschel to astronomy, besides his discovery of the planet Uranus?

Frederick Herschel, the German-British astronomer, was born in Hanover. At first, he was a musician, then took up astronomy and made a reflecting telescope in 1774. He discovered the planet Uranus, which he called ‘Georgium Sidus’ and in 1782, he was appointed astronomer to King George III. He also discovered 2 satellites of Saturn, the rotation of Saturn’s rings and the motions of binary stars.

 

 

 

 

 

 

 

Who was Aryabhatta, after whom India’s First satellite was named?

Aryabhatta (476-550 A.D.) was an astronomer and mathematician at the court of King Chandragupta Vikramaditya.

What was the contribution of the Indian astronomer and mathematician Aryabhatta?

Aryabhatta worked out a highly precise value for the Earth’s circumference. He also discovered the causes of solar and lunar eclipses and pointed on that the Sun is stationary and the Earth rotates.

 

 

 

 

What discoveries is Jean Foucault, French Physicist and astronomer, noted for?

Jean Foucault is noted mainly for his proof that light travels more slowly in water than in air, and his measurement of the speed of light. In 1851, he proved that the Earth rotates by using a freely suspended pendulum and studying the way it swings from side to side. He also invented the gyroscope and some optical instruments.

 

 

 

 

 

 

 

Name the Danish astronomer who detected serious mistakes in the astronomical tables of his time and revised them.

Tycho Brahe, originally studied law, but was more interested in astronomy. In 1563, he discovered serious mistakes in the astronomical tables then in use. He did much important work on the movement of the stars and the Moon.