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The Jovian moon Io as seen by the New Horizons spacecraft. The mission's camera caught a view of one of this moon's volcanos erupting. (NASA Goddard Space Flight Center Scientific Visualization Studio) The Large Binocular Telescope (LBT), located on Mount Graham in Arizona and run by the University of Arizona, is part of the next generation of extremely large telescopes (ELTs). With two primary mirrors measuring 8.4 m (~27.5 ft), it has a collecting area slightly greater than that of a 30-meter (98.4 ft) telescope. With their resolution, adaptive optics, and sophisticated instruments, these telescopes are expected to probe deeper...

A new generation of ground-based telescopes could be up to 10 times the size of existing instruments and have vision 40 times as sharp as the Hubble space telescope.Astronomers have been hailing the plans, as a European project to build an Extremely Large Telescope (ELT) enters a design testing phase. An ELT is vital if the pace of astronomical breakthroughs is to continue, say experts. The plans were outlined at the UK National Astronomy Meeting in Birmingham. Concepts for ELTs include the Thirty Meter Telescope (TMT) being considered by the US and Canada; and the Euro50 and Overwhelmingly Large Telescope...