Latest Space General Knowledge(GK) Questions and answers

1 .

The compound is used as rocket propellant

A)

Hydrazine

B)

Nitrogen

C)

Nitric acid

D)

Ammonia

Correct Answer : Hydrazine

Most liquid chemical rockets use two separate propellants: a fuel and an oxidizer. Typical fuels include kerosene, alcohol, hydrazine and its derivatives, and liquid hydrogen. Many others have been tested and used. Oxidizers include nitric acid, nitrogen tetroxide, liquid oxygen, and liquid fluorine.

2 .

Which Chinese space probe touched down on the far side of the moon?

A)

Juno

B)

Voyager 2

C)

Chang'e 4

D)

Mars Pathfinder

Correct Answer : Chang'e 4

Chang'e 4 is a robotic spacecraft mission, part of the second phase of the Chinese Lunar Exploration Program. China achieved humanity's first soft landing on the far side of the Moon, on 3 January 2019.

3 .

NASA successfully tested supersonic landing parachute in November 2017 for its approximate ______ mission

A)

GOLD

B)

ICON

C)

Zuma 2020

D)

Mars 2020

Correct Answer : Mars 2020

4 .

How much longitude does the Earth move in an hour?

A)

15 deg

B)

18 deg

C)

22 deg

D)

24 deg

Correct Answer : 15 deg

360 degrees ÷ 24 hours = 15 degrees per hour. Each time zone covers 15 degrees of longitude.

5 .

How much time does a Geostationary satellite take to complete one orbit, at the height of 35790 km?

A)

12 hours

B)

24 hours

C)

45 days

D)

365 days

Correct Answer : 24 hours

As the height of a satellite increases, so the time for the satellite to orbit increases. At a height of 35790 km, it takes 24 hours for the satellite to orbit. This type of orbit is known as a geosynchronous orbit, i.e. it is synchronized with the Earth.

One particular form of geosynchronous orbit is known as a geostationary orbit. In this type of orbit the satellite rotates in the same direction as the rotation of the Earth and has an approximate 24 hour period. This means that it revolves at the same angular velocity as the Earth and in the same direction and therefore remains in the same position relative to the Earth.

6 .

If the orbit of a planet is an ellipse then what is the point at which the Sun is located called?

A)

Circumcentre

B)

Centre

C)

Focus

D)

Incentre

Correct Answer : Focus

Both the Sun and the planets move around each other with their center of mass lying at the focus of the elliptical orbits.

7 .

Who was the first Indian astronomer to calculate the time taken by earth to orbit the sun?

A)

Ved Bhatnagara

B)

Bhaskaracharya

C)

Bishu devtamapi

D)

Aryabhatta

Correct Answer : Bhaskaracharya

Bhaskaracharya was an Indian astronomer and mathematician he was born in Bijapur (Karnataka). In his treatise 'Surya Sidhanta'he Calculated the time taken by the Earth to orbit the sun upto nine decimal places.

8 .

The final boundary between the Earth and the outer space is called

A)

ionosphere

B)

mesopause

C)

magnetosphere

D)

magnetopause

Correct Answer : magnetopause

9 .

The space shuttle which took Sunita Williams beyond earth was

A)

Galileo

B)

Voyager-2

C)

Discovery

D)

Challenger

Correct Answer : Discovery

Sunita Williamswas launched to the International Space Station (ISS) with STS-116, aboard the Space Shuttle Discovery, on December 9, 2006, to join the Expedition 14 crew. Discovery is one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built.

10 .

Who discovered Pluto?

A)

Tim Heynman

B)

Myne Ketteborough

C)

Jim Maxwell

D)

Clyde Tombaugh

Correct Answer : Clyde Tombaugh

Clyde Tombaugh, Discoverer of Pluto. NASA. The search for Planet X did not resume until 1929, when the job was handed to Clyde Tombaugh, a 23-year-old Kansan who had just arrived at the Lowell Observatory.