Exploring the origins of the universe: 145 low-noise amplifiers complete ALMA telescopes
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Updates every hour. Last Updated: 21-Dec-2025 06:11 ET (21-Dec-2025 11:11 GMT/UTC)
Fraunhofer IAF and the Max Planck Institute for Radio Astronomy have provided 145 high-performance low-noise amplifiers for the ALMA radio telescope array in Chile’s Atacama Desert. The amplifiers are based on InGaAs mHEMT MMICs and are essential components of the high-frequency receivers for the wavelength range between 2.6 and 4.5 mm (frequency range: 67–116 GHz, known as Band 2). They will enable ALMA to perform more precise measurements of objects and galaxies in the universe in order to gain new information about the formation of stars, planets and life. The amplifiers delivered complete ALMA, which began scientific operations in 2011 and has been gradually expanded since then.
Space manipulators play an important role in the on-orbit services and planetary surface operation whose reliability is a key issue. In the extreme environment of space, space manipulators are susceptible to a variety of unknown disturbances. Since it is difficult for the manipulator to be repaired immediately, once it fails, it will mean that it cannot complete the mission as expected, which may cause serious losses and dangers. How to have a resilient guarantee, i.e., the manipulator’s ability to resiliently recover and continue to complete tasks, in failure or disturbance is the core capability of its future development. The motion planning unit is used as the computing terminal of the manipulator’s joint motion trajectory. Compared with traditional motion planning, learning-based motion planning has gradually become a hot spot in current research. However, no matter what kind of research ideas, the single robotic manipulator is studied as an independent agent, making it unable to provide sufficient flexibility under conditions such as external force disturbance, observation noise, and mechanical failure.
A supernova has been detected at an unprecedented cosmic distance. The explosion, designated SN in GRB 250314A, occurred when the universe was only about 730 million years old, placing it deep in the era of reionisation.