SOLAR SYSTEM

UNIVERSE

SPACE EXPLORATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is used to detect and receive radio waves from outer space?
A
Spitzer space telescope
B
Hubble space telescope
C
Space probe
D
Radio telescope
Explanation: 

Detailed explanation-1: -A radio telescope is a specialized antenna and radio receiver used to detect radio waves from astronomical radio sources in the sky.

Detailed explanation-2: -RADIO TELESCOPES Radio astronomy has the advantage that sunlight, clouds, and rain do not affect observations. Since radio waves are longer than optical waves, radio telescopes are made differently than the telescopes used for visible light.

Detailed explanation-3: -Parts of a Radio Telescope Radio telescopes are built in all shapes and sizes based on the kind of radio waves they pick up. However, every radio telescope has an antenna on a mount and at least one piece of receiver equipment to detect the signals.

Detailed explanation-4: -Devices used to detect radio waves from objects in space are called radio telescopes. Radio telescopes are large dishes made out of metal that reflect radio waves to a central point called an antenna.

Detailed explanation-5: -A radio wave is generated by a transmitter and then detected by a receiver. An antenna allows a radio transmitter to send energy into space and a receiver to pick up energy from space. Transmitters and receivers are typically designed to operate over a limited range of frequencies.

Detailed explanation-6: -Astronomers have long been trying to answer this question by detecting radio signals emitted by nearby galaxies. However, these signals become weaker the further away a galaxy is from Earth, making it difficult for current radio telescopes to pick up.

There is 1 question to complete.