Stark broadening, the widening of spectral lines due to the perturbing influence of electric fields from electron collisions, plays a pivotal role in the analysis of stellar atmospheres. This ...

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

The hunt is on for terrestrial exoplanets in habitable zones, and some of the most promising candidates were discovered almost a decade ago about 40 light-years from Earth. The TRAPPIST-1 system ...

Labs, D. The energy flux of the sun.--Böhm-Vitense, E. Model stellar atmospheres and heavy element abundances.--Hunger, K. Properties and problems of helium stars.--Baschek, B. Abundance anomalies in ...

The search for habitable worlds beyond the solar system now faces a more technical obstacle than distance: uncertainty in the data itself. As space telescopes grow more precise, so too does the ...

The most massive, hottest stars in the Universe are not as hot as we thought, according to new research by NASA-sponsored astronomers. The result was obtained by comparing a sophisticated new model of ...

An alien world near Earth is being trailed by a gigantic tail, stretching longer than 40 Earths as it closely circles its home star. The enormous structure, which is made up of gas leaking from the ...

Pandora’s spacecraft bus was photographed Jan. 10 within a thermal-vacuum testing chamber at Blue Canyon Technologies in Lafayette, Colorado. The bus provides the structure, power, and other systems ...

Scientists have devised a new method for mapping the spottiness of distant stars by using observations from NASA missions of orbiting planets crossing their stars’ faces. The model builds on a ...