How is the Hubble Telescope able to see such long distances?

Question

Olivia Aldridge · Accepted Answer

Space is almost empty.So you can see far away objects by naked eye if the object is bright enough..The function of telescope is to collect more light so that we can see faint objects.

Since the Hubble telescope operates in space above Earth's atmosphere, there are no external disturbances such as clouds, air currents, etc. Distance is not an issue because we can see the Andromeda galaxy, which is 2.5 million light years away, with our naked eyes. The telescope has three functions: (1) it collects more light; (2) it resolves close objects; and (3) it magnifies objects. The 2.4-meter diameter mirror on the Hubble telescope allows it to see objects thousands of times fainter than those seen with the human eye.

Christopher Ales · Answer

undefined Due to a number of factors, including its position above Earth's atmosphere, which removes atmospheric distortion, its large primary mirror, which collects more light, and its capacity to observe in multiple wavelengths of light, which enables it to penetrate dust and other obstacles in space, the Hubble Telescope is able to see such long distances.