The Very Large Array {VLA} is a multi-purpose device designed to allow the investigation of many celestial bodies, including radio galaxies, quasars, pulsars, black holes, and hydrogen gases that form a large part of the Milky Way galaxy as well as outer galaxies also constitute. The VLA was used to receive radio communications from the Voyager 2 spacecraft as it flew by Neptune. The galaxies M31 and M32 were discovered in December 2014 through January 2015, with the intention of quickly discovering trillions of systems for extremely powerful signals from advanced civilizations. Let's enjoy a very large array in the USA.
1. Very Large Array dedicated to which American physicist and radio engineer?
A. Karl G.Jansky
B. Georges Lemaitre
C. Friedrich Bessel
D. None of these
2. Who discovered the first radio waves emanating from the Milky Way?
A. Georges Lemaitre
B. Friedrich Bessel
C. Karl Guthe Jansky
D. All of the above
3. When was Karl G. Jansky discovered radio waves emanating from the Milky Way?
A. August 1930
B. August 1931
C. August 1933
D. August 1939
4. Very large array located in:
A. North Macedonia
B. New Mexico
C. New Zealand
D. Southampton
5. The Karl G. Jansky Very Large Array (VLA) is a:
A. Centimeter-wavelength radio astronomy observatory
B. Surveillance-wavelength radio astronomy observatory
C. Century-wavelength radio astronomy observatory
D. None of these
6. Astronomers using the VLA have made key observations of black holes and protoplanetary disks around:
A. Young star
B. Pulsar
C. Supernova
D. None of these
7. It is the part of which one?
A. NASA
B. Blue origin
C. NRAO VLA Sky Survey
D. SpaceX
8. Which is the full meaning of the NRAO sky survey?
A. Numerous Radio Astronomy Observatory
B. National Radio Astronomy Observatory
C. Niger Radio Astronomy Observatory
D. None of the above
9. It is work between which wavelength?
A. 10 GHz-23 MHz
B. 30 GHz-43 MHz
C. 50 GHz-73 MHz
D. 80 GHz-93 MHz
10. The VLA stands at an elevation of:
A. 2,120 m
B. 6,970 ft
C. 212,000 cm
D. All of the above
11. When was the VLA Sky Survey (VLASS) began?
A. In September 2016
B. In September 2017
C. In September 2018
D. In September 2019
12. This survey will cover the entire sky visible to the VLA ___________% of the Earth's sky in three full scans.
A. 10% of the Earth's
B. 20% of the Earth's
C. 70% of the Earth's
D. 80% of the Earth's
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