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The Hydrogen Epoch of Reionization Array (HERA) is a radio telescope dedicated to observing large scale structure during and prior to the epoch of reionization. HERA is a Square Kilometre Array (SKA) precursor instrument, intended to observe the early universe and to assist in the design of the full SKA.
The H1 particle detector at HERA, Hamburg. The detector itself is hidden behind the dark red concrete wall behind the electronics trailer. H1 was a particle detector operated at the HERA (Hadron Elektron Ring Anlage) collider at the German national laboratory DESY in Hamburg. The first studies for the H1 experiment were proposed in 1981.
The design effort for ZEUS can be traced back to 1982. [4] A Letter of Intent was submitted in 1985. [5] The ZEUS detector was operational with the first collisions of the HERA collider in 1992. The last electron–proton collisions at ZEUS were recorded on 30 June 2007. [6]
Hera is a spacecraft developed by the European Space Agency for its space safety program. Its primary mission objective is to study the Didymos binary asteroid system that was impacted four years earlier by the NASA Double Asteroid Redirection Test (DART) spacecraft and contribute to validation of the kinetic impact method to deviate a near-Earth asteroid from a colliding trajectory with Earth.
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Hera probe and its 2 CubeSats, Milani and Juventas. Hera is the European component of the ESA–NASA AIDA mission. The Hera spacecraft, approved on 29 November 2019, [24] will focus on key measurements to validate impact and asteroid deflection models, such as the detailed characterisation of the impact crater made by the DART impactor. [38]
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The 155 mm M549/M549A1 HERA is a separate-loading munition with a two-part forged shell body. The forward HE-filled shell body is constructed from high-fragmentation steel (HF1) and is of a low-drag aerodynamic profile. The rocket-motor body makes up the rear of the shell, this constructed from 4340 steel.