The speed of light is , but it still takes time for light to get to its destination. this is not usually a noticeable effect over short distances here on the earth, but as objects get farther away, the "lag time" for information becomes more . we see objects not as , but rather we see them as . for farther objects, this "lookback time" becomes . since extremely distant objects will also look incredibly to us, we need very large telescopes, which can gather and focus enough light to observe such objects.