General Awareness ยท Physics

Space Exploration and Astronomy

3,952 Questions

Review significant milestones in space exploration, including artificial satellites, reusable space shuttles, and historic lunar landings. This topic also covers astronomical phenomena and telescopic observations. Such scientific general knowledge is commonly tested in SSC, railways, and banking examinations.

Space shuttle missionsArtificial satellitesLunar and planetary landingsSpace telescopes and observatories

Space Exploration and Astronomy Questions

Multiple choice

What is the estimated number of pieces of orbital debris smaller than 1 centimeter in Earth's orbit?

  1. 1 million

  2. 10 million

  3. 100 million

  4. 1 billion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is estimated that there are approximately 100 million pieces of orbital debris smaller than 1 centimeter in Earth's orbit.

Multiple choice

What is the primary method for mitigating the growth of orbital debris?

  1. Active debris removal

  2. Passive debris removal

  3. International cooperation and regulations

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mitigating the growth of orbital debris involves a combination of active debris removal, passive debris removal, international cooperation, and regulations to minimize the creation and accumulation of space junk.

Multiple choice

What is an example of an active debris removal mission?

  1. The RemoveDEBRIS mission

  2. The e.Deorbit mission

  3. The Astroscale mission

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Examples of active debris removal missions include the RemoveDEBRIS mission, the e.Deorbit mission, and the Astroscale mission, which aim to capture and remove orbital debris from Earth's orbit.

Multiple choice

Which international organization is responsible for coordinating efforts to address the issue of orbital debris?

  1. United Nations Office for Outer Space Affairs (UNOOSA)

  2. International Astronautical Federation (IAF)

  3. European Space Agency (ESA)

  4. National Aeronautics and Space Administration (NASA)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The United Nations Office for Outer Space Affairs (UNOOSA) is responsible for coordinating international efforts to address the issue of orbital debris, including promoting cooperation, developing guidelines, and facilitating research and development.

Multiple choice

Which space agency launched the first ultraviolet observatory?

  1. NASA

  2. ESA

  3. JAXA

  4. Roscosmos
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NASA launched the first ultraviolet observatory, Orbiting Astronomical Observatory 2 (OAO-2), in 1968.

Multiple choice

Which ultraviolet observatory is known for its ability to detect faint objects and study the early universe?

  1. Hubble Space Telescope

  2. Chandra X-ray Observatory

  3. Spitzer Space Telescope

  4. James Webb Space Telescope
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The James Webb Space Telescope (JWST) is known for its ability to detect faint objects and study the early universe.

Multiple choice

What is the name of the ultraviolet observatory that was launched in 2000 to study the Sun's corona and its impact on Earth's space weather?

  1. Solar Dynamics Observatory

  2. Solar and Heliospheric Observatory

  3. Transition Region and Coronal Explorer

  4. Extreme Ultraviolet Imager
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Transition Region and Coronal Explorer (TRACE) was launched in 2000 to study the Sun's corona and its impact on Earth's space weather.

Multiple choice

Which ultraviolet observatory is known for its ability to study the composition and dynamics of planetary atmospheres?

  1. Hubble Space Telescope

  2. Chandra X-ray Observatory

  3. Spitzer Space Telescope

  4. James Webb Space Telescope
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Hubble Space Telescope (HST) is known for its ability to study the composition and dynamics of planetary atmospheres.

Multiple choice

What is the name of the ultraviolet observatory that was launched in 1995 to study the composition and structure of the interstellar medium?

  1. Far Ultraviolet Spectroscopic Explorer

  2. Cosmic Origins Spectrograph

  3. Galaxy Evolution Explorer

  4. Ultraviolet and Optical Telescope
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Far Ultraviolet Spectroscopic Explorer (FUSE) was launched in 1995 to study the composition and structure of the interstellar medium.

Multiple choice

What is the name of the ultraviolet observatory that was launched in 2000 to study the Sun's corona and its impact on Earth's space weather?

  1. Solar Dynamics Observatory

  2. Solar and Heliospheric Observatory

  3. Transition Region and Coronal Explorer

  4. Extreme Ultraviolet Imager
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Transition Region and Coronal Explorer (TRACE) was launched in 2000 to study the Sun's corona and its impact on Earth's space weather.

Multiple choice

What is the most famous comet that has been observed?

  1. Comet Halley

  2. Comet Hale-Bopp

  3. Comet Hyakutake

  4. Comet Shoemaker-Levy 9
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Comet Halley is the most famous comet due to its regular appearance every 76 years, making it visible to multiple generations.

Multiple choice

What is the name of the spacecraft that successfully landed on a comet?

  1. Rosetta

  2. Voyager 1

  3. New Horizons

  4. Cassini-Huygens
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Rosetta spacecraft successfully landed on Comet 67P/Churyumov-Gerasimenko in 2014, providing valuable data and images of the comet's surface.

Multiple choice

What is the name of the largest known comet ever observed?

  1. Comet Hale-Bopp

  2. Comet Hyakutake

  3. Comet McNaught

  4. Comet Bernardinelli-Bernstein
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Comet Bernardinelli-Bernstein, discovered in 2021, is the largest known comet ever observed, with a nucleus estimated to be 100 kilometers in diameter.

Multiple choice

What is the name of the spacecraft that successfully returned samples from a comet?

  1. Stardust

  2. Rosetta

  3. Voyager 1

  4. New Horizons
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Stardust spacecraft successfully returned samples from Comet Wild 2 in 2006, providing valuable insights into the composition of comets.

Multiple choice

When was the ISECG established?

  1. 2010

  2. 2012

  3. 2014

  4. 2016
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ISECG was established in 2012 as a forum for international cooperation and coordination in space exploration.