Astronomers have now observed the radio emission from the neutral hydrogen gas (HI) in a nearby galaxy. Hydrogen gas emits radio emission in a spectral line at a very specific frequency of 1420 MHz.

Very massive stars (VMSs) have had a massive impact on the formation of our universe. However, there aren't very many of them ...

I'm writing up a report about 21cm-line radio astronomy, and it includes a discussion of spectral lines and the 21cm line in particular.However, I have a problem that I was hoping the genius of ...

Astronomers can’t detect atomic deuterium on white dwarfs, because the hydrogen lines overwhelm them, but if white dwarfs also have molecules that include deuterium atoms, observers may see them, ...

In 1941, German physicist Rudolph Minkowski proposed a two-level scheme based on the absence (type I) or presence (type II) of strong hydrogen spectral lines when the supernova is at peak brightness.

Alluxa introduces two Hydrogen Alpha (H-Alpha) Emission Line Filters that are revolutionizing the ultra-narrow optical filters market. Though these new filters have been specifically tailored to ...

The team processed the hydrogen radio recombination lines (RRL) in the GPPS spectral line data in the same sky area as the HI data, revealing luminous regions ionized by bright stars and diffuse ...

In 1925, grad student Cecilia Payne first proposed that stars were mostly made of hydrogen and helium and shaped our understanding of the universe.

Guntur, spectral lines, and the discovery of helium Did you know that helium is the first alien element, so as to say? This means that its existence elsewhere was discerned much before it was ...