Somewhere in the millimeter-wave static that washes over southern Arizona, there is a faint signal from galaxies that lit up ...

One of the biggest unanswered questions in solar physics is why the Sun’s corona — its outermost atmosphere — is vastly ...

It would be like detecting a hidden inflection in our own Sun’s spectrum, yet no such evidence can be found! Past solar ...

Yes. Each spectral line corresponds to a specific energy transition related to a particular atom — and thus, element. Astronomers analyze such lines to tell us what celestial objects are made of. In ...

The sun's inner corona, the hottest part of our star's atmosphere, appears faint yellow in a time-lapse made from images taken by the ASPIICS coronagraph aboard Proba-3. An international team of ...

The team uses the "Little Garden" spectrometer to measure spectral lines from reference gas tubes and compares them with ...

Astronomers have tracked a dramatic "changing-look" active galactic nucleus (AGN) whose central supermassive black hole appeared to switch off and then rapidly reignite. The galaxy, HE 1237−2252, ...

Researchers developed a new type of spectral shaper that can shape the spectrum of 10,000 lines of light from a laser frequency comb. The image shows the spatial light modulator they used with a 2D ...