How long is a light-year?

• 9.461 quadrillion km

• 9.461 trillion km

• 9.461 billion km

• 9.461 million km

Soviet Union managed to launch the first satellite in 1957. What is the satellite called?

• Voyager 1

• Explorer 1

• Sputnik 1

• Kosmos 1818

Which of these following meteor showers appears in the month November every year?

• Geminids

• Lyrids

• Leonids

• Perseids

A bright meteor is called

• Astrophyllite

• Achondrite

• Pawdite

• Bolide

In billions of years time, Earth will not be habitable. What is the reason?

• The Sun’s photosphere will become so hot that life becomes impossible on Earth

• The Sun will become a red giant star and expands to a size beyond Earth’s orbit

• The magnetic field of the Earth will disappear and we will lose the protection from solar wind

• The temperature of Earth will drop as the Sun is running out of fuel.

For total solar eclipse, the earth has to be in the region of _____; For partial lunar eclipse, the moon has to be in the region of ______

• umbra, umbra

• umbra, penumbra

• penumbra, penumbra

• None of the above

Meteors get hot when entering atmosphere mostly due to

• Ablation

• Friction

• Compression

• Sublimation

Which of the following is correct about neutron stars?

• High density, strong gravity, strong magnetic field

• High density, strong gravity, weak magnetic field

• Low density, weak gravity, weak magnetic field

• Low density, weak gravity, strong magnetic field

_______ is the ripples in the overall geometry of space produced by the acceleration of moving objects.

• Doppler effect

• Granulation

• Gravitational waves

• Elongation

The far side of the moon was first photographed by which spacecraft?

• Apollo 11

• Luna 3

• Chang'e 4

• Pioneer 4