The most energetic photons (up to 16 TeV) observed from an extragalactic object originate from the blazar Markarian 501 (Mrk 501).
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The highest photon energies measured to date are in the TeV range, the record being held by an "extraordinary outburst" of blazar Markarian 501 in 1997, yielding photons with as much as 16 TeV.
Published in 1997 by The Bible Societies / HarperCollins, this uses the second edition of the GNB/TEV (with British spelling).
Resistance to multiple strains of both TEV and PeMoV has been confirmed by repeated experiments at the Texas Agricultural Experiment Station in Weslaco, Texas.
TEV is an open source design for new, prefabricated, compact roads that would continually power conventional electric vehicles such as cars, taxis, vans and minibuses and allow them to operate under software control, creating a ‘driverless’ experience for the motorist.