Physics · General Awareness

Astronomy and Space Science

2,804 Questions

Astronomy and Space Science questions explore observational instruments, spectroscopy, space stations, and astrostatistics. These scientific concepts are vital for SSC, railways, and UPSC preliminary exams. Test your knowledge of space technology and astronomical history with these practice questions.

Spectroscopy techniquesSpace station usesAstronomical instrumentsAstrostatistics basicsExoplanet research programs

Astronomy and Space Science Questions

Multiple choice physics motion and measurement measuring length measurement of small and large distances measurement of distance

The effect of parallax is used to measure:

  1. distances to nearby objects

  2. distances to nearby stars

  3. nearness of atoms in substances

  4. the object and image distance in optical experiments
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Astronomers use an effect called parallax to measure distances to nearby stars. Parallax is the apparent displacement of an object because of a change in the observer's point of view.

As the Earth orbits the sun, a nearby star will appear to move against the more distant background stars. Astronomers can measure a star's position once, and then again 6 months later and calculate the apparent change in position.

Multiple choice mathematical modelling proof by contradiction similar triangles

Scientists use models to help guide their search for

  1. life on earth

  2. existence of living organisms

  3. other worlds

  4. new information
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Scientists use models to help them get new information and use these information in their research.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Which of the following is not a fact about Hubble Telescope?

  1. The Hubble Space Telescopes captures and transmits colorful images of objects in space such as dying stars and other galaxies.

  2. Although the Hubble Space Telescope can observe many things in space, it cannot observe the Sun or Mercury.

  3. The Hubble Space Telescope orbits about 353 miles above Earth

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the facts mentioned about Hubble Telescope are true. The Hubble Telescope orbits 353 miles above earth and transmits colorful images of objects in space and through Hubble telescope we can observe many things in space except the sun or mercury.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

DSN is a deep space network tracking station is 

  1. to track and communicate with interplanetary spacecraft missions.

  2. to track and provide the fuel to the spacecraft.

  3. to maintain the spacecraft

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

DNS is a deep space network tracking station use to track and  communicate with interplanetary spacecraft missions, Along with tacking and communication DSN is also used to explore the furthest point of our solar system.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Astronomical data taken with ________________ must undergo several calibration steps before they are suitable for astronomical analysis

  1. HOST

  2. CCD

  3. CCR

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Astronomical data taken with CCD (charged couple devices) must undergo several calibration steps before they are suitable for astronomical analysis.

Multiple choice physics life cycle of stars evolution and end stages of stars the stars stars

Why does a star grow larger after it exhausts its core hydrogen?

  1. The outer layers of the star are no longer gravitationally attracted to the core.

  2. Hydrogen fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward.

  3. Helium fusion in the core generates enough thermal pressure to push the upper layers outward.

  4. Helium fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward.
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Multiple choice

broaden your horizon

  1. wide angle binoculars

  2. gain knowledge or experience

  3. view from the space shuttle

  4. get to know moe people
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Broadening your horizon is an idiom meaning to expand your range of interests, knowledge, or experience. It is not about literal sight.

Multiple choice

Why do scientists collect data during an observation or investigation?

  1. To do math

  2. To make a graph

  3. To answer a question about the world

  4. For the science fair
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The primary goal of science is to understand the natural world. Scientists collect data to answer specific questions, test hypotheses, and build reliable knowledge about how things work. While math and graphs are tools used to analyze data, they are not the ultimate purpose of the investigation.

Multiple choice

What affect does a telescope have when looking at stars?

  1. It magnifies stars.

  2. it makes stars appear more colorful.

  3. It reduces their size.

  4. It makes them appear farther away.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Telescopes use lenses or mirrors to gather more light than the human eye, which allows them to magnify distant objects and make them appear larger and clearer.

Multiple choice

A telescope is

  1. a tool used to measure the temperature

  2. equipment used to view far-away stars

  3. a tool used for seeing things that are close
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A telescope is an optical instrument designed to make distant objects appear closer and larger by gathering light. It is not used for measuring temperature or viewing nearby objects.

Multiple choice

Kepler added support to Copernicus's theory by

  1. publishing the theory in a book that many people read

  2. inventing a device for seeing the night sky more accurately

  3. writing mathematical laws that described how planets move

  4. showing that using the theory would improve safety at sea.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kepler used the observational data of Tycho Brahe to derive his laws of planetary motion, which mathematically described elliptical orbits and provided the necessary support for the heliocentric model.

Multiple choice

Explorers encourage the growth of science by

  1. creating a need to study the stars

  2. arguing against the power of the RCC

  3. writing exaggerated accounts of their travels

  4. showing that accepted beliefs could be wrong
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Explorers encountered new lands, peoples, and phenomena that did not fit into the established knowledge of the time, which challenged the authority of ancient texts and encouraged empirical observation.