how far can telescopes see into space
Since light has a speed of 186,000 miles per second (light can travel about 7 times around the entire earth in 1 second!), light travels about 5,865,696,000,000 miles in just one year. You can attach 9 more zeros to the end of this to get 1 billion light-years and another one for 10 billion light-years. The farthest that Hubble has seen so far is about 10-15 billion light-years away. The farthest area looked at is called the Hubble Deep Field. 1  Javascript must be enabled to use Cool Cosmos.
There are several types of telescopes that are used today to study the universe. Radio telescopes detect noise from radio wavelengths in space. It turns out that objects in space give off radio noise. These telescopes are able to listen to all this noise and process it into information for researchers to study. A radio telescope can produce a picture from an object it is listening to from the noise is picks up from that object.