What Makes a Star a Star?

How do you separate a true star from the stellar wannabes of the Universe? After a decade of collecting data, astronomer Trent Dupuy thinks he finally has the answer.

With so many objects known to sit in that weird middle ground between giant planets and tiny stars, scientists have struggled to boil it down to a simple answer. What Dupuy boils it down to is mass. "Mass is the single most important property of stars because it dictates how their lives will proceed," Dupuy, from the University of Texas at Austin, explained at the American Astronomical Society's summer meeting earlier this month.  
Publié le 22 juin 2017. Bookmarquez ce permalien.