New catalogue of 12,000 X-ray spectral lines

X-ray sources in the sky radiate "bar codes" revealing their properties. These bar codes consist of narrow peaks and troughs within the source's spectrum. The RGS instrument on the satellite XMM-Newton was built to find these ...

The fingerprints of molecules in space

Physicists at the University of Innsbruck are on the hunt for nitrogen-containing molecules in space. Using terahertz spectroscopy, they directly measured two spectral lines for one particular molecule for the first time. ...

Observation of the hyperfine spectrum of antihydrogen

A Canadian-led investigation has opened a new chapter in antimatter research. In a study published today in Nature, the ALPHA Collaboration, which includes 50 physicists from 17 institutions, reports the first detailed observation ...

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