| http://www.w3.org/ns/prov#value | - They say a powerful X-ray observatory is an essential part of the suite of facilities expected to be operational in the 2020s, alongside others including ALMA studying (sub)millimetre wavelengths, the James Webb Space Telescope (JWST), the European-Extremely Large Telescope (E-ELT) in the optical and near-infrared, and the Single Kilometre Array (SKA) in the radio band.
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