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Artículos sobre Radio astronomy

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The star system V883 Orionis contains a rare star surrounded by a disk of gas, ice and dust. A. Angelich (NRAO/AUI/NSF)/ALMA (ESO/NAOJ/NRAO)

Water in space – a ‘Goldilocks’ star reveals previously hidden step in how water gets to planets like Earth

Astronomers have long known where water is first formed in the universe and how it ends up on planets, asteroids and comets. A recent discovery has finally answered what happens in between.
Radio observatories like the Green Bank Telescope are in radio quiet zones that protect them from interference. NRAO/AUI/NSF

Radio interference from satellites is threatening astronomy – a proposed zone for testing new technologies could head off the problem

Many telescopes use the radio spectrum to learn about the cosmos. Just as human development leads to more light pollution, increasing numbers of satellites are leading to more radio interference.
The colliding cluster Abell 3266 as seen across the electromagnetic spectrum, using data from ASKAP and the ATCA (red/orange/yellow colours), XMM-Newton (blue) and the Dark Energy Survey (background map). Christopher Riseley (Università di Bologna)

We found some strange radio sources in a distant galaxy cluster. They’re making us rethink what we thought we knew.

One of the objects is a ‘fossil’ radio source – a leftover from the death of a supermassive black hole that once shot out huge jets of plasma.
Scientists think there are 300 million habitable planets in the Milky Way, and some may be home to intelligent life. Bruno Gilli/ESO

Blasting out Earth’s location with the hope of reaching aliens is a controversial idea – two teams of scientists are doing it anyway

This year, two groups of astronomers plan to send messages containing information about humans and the location of Earth toward parts of space they think may be home to intelligent life.
ESO/WFI (Optical); MPIfR/ESO/APEX/A.Weiss et al. (Submillimetre); NASA/CXC/CfA/R.Kraft et al. (X-ray)

Some black holes are anything but black – and we’ve found more than 75,000 of the brightest ones

Despite the name, some black holes effectively “shine” as they suck up nearby material with such force that it begins to glow. New research reveals a new method for detecting these active black holes.

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