The telescope began as a relatively simple device ... lenses had already entered the collective consciousness during the 1600s, but there were challenges in creating mirrors of sufficient ...

Near the constellation Leo, JWST turned its gaze slightly aside. In the dim stars of Sextans, it spotted something ...

WASHINGTON — The Hubble Space Telescope marked its 35th anniversary this week and NASA celebrated by releasing a series of stunning new photos from the observatory. With nearly 1.7 million ...