"Stellar" relates to stars or is used to describe something outstanding, while "Steller" refers to the German naturalist Georg Wilhelm Steller.
Today, it's known that the long-term fate of a star depends on whether its mass is above or below a boundary called the Chandrasekhar limit. Stars of less than eight solar masses (M☉) or so are thought to end their lives as a long-lived stellar ember called a white dwarf star. Ab...
As December begins, the bright reddish planet Mars will be shining just above (or celestial north of) the large open star cluster in Cancer known as the Beehive, Praesepe, and Messier 44. Mars and the stellar "bees," which will be scattered across an area more than twice the size of a...
Although there are older records from many different places and cultures that tell their own stories, it is the ancient Greeks that made a lasting impact on astronomy. Claudius Ptolemy, a Greek astronomer who lived in the city of Alexandria in the 2nd century A.D., made a comprehensive list...
What Are Fast Radio Bursts or FRBs and How Do We Find More? What Are Stellar-Mass and Intermediate-Mass Black Holes? What Are Some Objects That Challenge the Definition of Pulsars? What Have We Learned From Neutron Stars Interacting With Their Environment?
Robert Lea is a freelance science journalist focusing on space, astronomy, and physics. Rob’s articles have been published inNewsweek,Space,Live Science,Astronomymagazine andNew Scientist. He lives in the North West of England with too many cats and comic books. ...
All main sequence stars are in equilibrium, meaning the outward pressure caused by the fusion reactions is balanced by the force of gravity pulling the star together. The pressure and temperature of a main sequence star increase as you get closer to its center. The length of time that a star...
Reproduced with permission from Astronomy & Astrophysics, ©ESO. However, as mentioned in Section 2, the restarted activity can be identified also by other properties. Similar to what was performed for the remnant sources (and using the same reference sample of sources larger than 60 arcsec ...
Stellar Death and New Life When one thing dies, another is born. One day, our bodies will disintegrate into invisible atoms. But you will never truly leave planet Earth or the solar system. You'll still be here, except your atoms will be rearranged into molecules of different substances, ...
Astronomers have discovered what may be five planets orbiting Tau Ceti, the closest single star beyond our solar system whose temperature and luminosity nearly matches the suns. If the 【M1】___ planets are there, one of them is about the ..