Space Science and Astronomy MCQs

With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements: 1. All types of UAVs can do vertical landing. 2. All types of UAVs can do automated hovering. 3. All types of UAVs can use battery only as a source of power supply. How many of the statements given above are correct?

• AOnly one
• BOnly two
• CAll three
• DNoneCorrect

Consider the following space missions: 1. Axiom-4 2. SpaDeX 3. Gaganyaan How many of the space missions given above encourage and support micro-gravity research?

• AOnly one
• BOnly two
• CAll threeCorrect
• DNone

Consider the following statements: Statement-I: Giant stars live much longer than dwarf stars. Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions. Which one of the following is correct in respect of the above statements?

• ABoth Statement-I and Statement-II are correct and Statement-II explains Statement-I
• BBoth Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
• CStatement-I is correct, but Statement-II is incorrect
• DStatement-I is incorrect, but Statement-II is correctCorrect

Consider the following pairs: Objects in space : Description 1. Cepheids — Giant clouds of dust and gas in space 2. Nebulae — Stars which brighten and dim periodically 3. Pulsars — Neutron stars that are formed when massive stars run out of fuel and collapse How many of the above pairs are correctly matched?

• AOnly oneCorrect
• BOnly two
• CAll three
• DNone

Which one of the following countries has its own Satellite Navigation System?

• AAustralia
• BCanada
• CIsrael
• DJapanCorrect

If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth? 1. GPS and navigation systems could fail. 2. Tsunamis could occur at equatorial regions. 3. Power grids could be damaged. 4. Intense auroras could occur over much of the Earth. 5. Forest fires could take place over much of the planet. 6. Orbits of the satellites could be disturbed. 7. Shortwave radio communication of aircraft flying over polar regions could be interrupted. Select the correct answer using the code given below:

• A1, 2, 4 and 5 only
• B2, 3, 5, 6 and 7 only
• C1, 3, 4, 6 and 7 onlyCorrect
• D1, 2, 3, 4, 5, 6 and 7

Which one of the following statements best reflects the idea behind the 'Fractional Orbital Bombardment System' often talked about in media?

• AA hypersonic missile is launched into space to counter an asteroid approaching the Earth and explode it in space
• BA spacecraft lands on another planet after making several orbital motions
• CA missile is put into a stable orbit around the Earth and deorbits over a target on the EarthCorrect
• DA spacecraft moves along a comet with the same speed and places a probe on its surface

Which one of the following is a reason why astronomical distances are measured in light-years?

• ADistances among stellar bodies do not change
• BGravity of stellar bodies does not change
• CLight always travels in straight line
• DSpeed of light is always sameCorrect

"The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft." The experiment in question refers to:

• AVoyager-2
• BNew Horizons
• CLISA Pathfinder
• DEvolved LISACorrect

Recently, scientists observed the merger of giant black holes billions of light-years away from the Earth. What is the significance of this observation?

• A'Higgs boson particles' were detected
• B'Gravitational waves' were detectedCorrect
• CPossibility of inter-galactic space travel through 'wormhole' was confirmed
• DIt enabled the scientists to understand 'singularity'

For the measurement/estimation of which of the following are satellite images/remote sensing data used? 1. Chlorophyll content in the vegetation of a specific location 2. Greenhouse gas emissions from rice paddies of a specific location 3. Land surface temperatures of a specific location Select the correct answer using the code given below:

• A1 only
• B2 and 3 only
• C3 only
• D1, 2 and 3Correct

In which of the following areas can GPS technology be used? 1. Mobile phone operations 2. Banking operations 3. Controlling the power grids Select the correct answer using the code given below:

• A1 only
• B2 and 3 only
• C1 and 3 only
• D1, 2 and 3Correct