Tag: universe and space science

Questions Related to universe and space science

Which of the following is correct statement regarding HST?

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

  1. The Hubble Space Telescope (HST) , has accurately determined the rate of expansion of the universe.

  2. Hubble has contributed to studies of the behavior of graphite composite structures in vacuum.

  3. Optical contamination from residual gas can also be observed from the HST.

  4. none of the above

Show answer
Correct Option: A,B,C
Explanation:

The hubble space Telescope (HST) has accurately determined rate of expansion of the universe. It has contributed to studies of the behaviour of graphite composite structures in vacuum and has observed the optical contamination from residual gases.

What is the average speed of the Hubble telescope?

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

  1. 2 miles per second

  2. 10 miles per second

  3. 7 miles per second

  4. 5 miles per second

Show answer
Correct Option: D
Explanation:

The average speed of Hubble space telescope is $17000$ $mph$ or $5$ miles per second. Hubble space telescope takes 95 minutes to complete one orbit.

The Hubble Space Telescope is scheduled to retire in which of the following year?

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

  1. 2012

  2. 2013

  3. 2014

  4. 2015

Show answer
Correct Option: C
Explanation:

The Hubble space telescope was launched in 1990 to observe stellar objects It has gathered spectacular images and has helped advanced knowledge in the field of cosmology. After it immense contribution it retired in the year 2014.

Fill in the blank.
Hubble transmits about _____ of raw science data every week.

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

  1. 100 gigabits

  2. 140 gigabits

  3. 180 gigabits

  4. 200 gigabits

Show answer
Correct Option: B
Explanation:

Hubble data was initially stored on the spacecraft in reel-to-reel tape recorders but these were replaced by solid state data storage facilities during serving missions 2 and 3A. Hubble transmits about 140 gigabits of raw science data every week.

The Corrective Optics Space Telescope Axial Replacement (COSTAR) system was designed to correct the _______________________ for light focused at the FOC, FOS, and GHRS.

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

  1. visual aberration

  2. spherical aberration

  3. diffraction

  4. none of the above

Show answer
Correct Option: B
Explanation:

The Corrective Optics Space Telescope Axial Replacement(COSTAR) system was designed to correct the spherical aberration for light focused at the FOC, FOS and GHRS. Spherical aberration is the condition when there is a loss in the definition of the image arising from the surface geometry of a spherical mirror or lens. Hence to solve this  condition COSTAR was designed.

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

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

  1. HOST

  2. CCD

  3. CCR

  4. none of the above

Show answer
Correct Option: B
Explanation:

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

The unique window(s) on the Universe enabled by Hubble is/are :

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

  1. Hubble Deep Field

  2. Hubble Ultra-Deep Field

  3. Hubble Extreme Deep Field

  4. All of the above

Show answer
Correct Option: D
Explanation:

The unique windows on the universe enabled by Hubble are Hubble deep field, Hubble Ultra-Deep Field and Extreme Deep Field.

All images from Hubble are ___________________,in which its cameras incorporate a variety of filters each sensitive to specific wavelengths of light.

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

  1. advanced diffracted

  2. monochromatic grayscale

  3. Lucky Cam

  4. none of the above

Show answer
Correct Option: B
Explanation:

All images from Hubble are monochromatic gray scale, in which its cameras incorporate a variety of filters each sensitive to specific wavelengths of light.

The GHRS was a spectrograph designed to operate in the ___________.

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

  1. infrared

  2. ultraviolet

  3. visible

  4. none of the above

Show answer
Correct Option: B
Explanation:

The GHRS was a spectrograph designed to operate in ultraviolet light. It was installed on the Hubble Space Telescope during its original constructing and it was launched into space as a part of the space telescope abroad the space shuttle on April 24,1990.

To fit the COSTAR system onto the telescope, one of the other instruments had to be removed, and astronomers selected the________________________to be sacrificed.

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

  1. CCD

  2. HOST

  3. High Speed Photometer

  4. none of the above

Show answer
Correct Option: C
Explanation:

To fit the COSTAR system onto the telescope one of the other instruments had to be removed, and astronomer selected the High Speed Photometer (HSP) to be sacrificed.