A simple diagram, which celebrates its centennial this year, continues to serve as the most essential conceptual tool in stellar astrophysics Modern astronomy paints a vivid picture of the universe ...

Stars live for a long time, with even the most massive stars having lifetimes measured in millions of years. But, for a mere few thousand years toward the end of their lives, some massive stars go ...

Planets accompany most sun-like stars. The orbits of many are sufficiently close that they will be engulfed when their host stars ascend the giant branch. This Letter compares the power generated by ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. If you sampled the hundreds of billions of stars in any galaxy and plotted their luminosity ...

Description: A descriptive, largely nonmathematical course in astronomy intended for non-science majors. Topics include: properties of stars; stellar birth and death; the Hertzsprung-Russel diagram; ...

Restricted for 15 years, until Jan-01-2022; Transferring office; 8/30/1985 memorandum, Deiss to Dick; Contact reference staff for details.

A thin gap has been discovered on the Hertzsprung-Russell Diagram (HRD). This is the most fundamental of all maps in stellar astronomy, a finding that provides new information about the interior ...

Figure 1: The stellar surface of π 1 Gruis. Despite the fact that none of the above relations is derived from stellar models that match the atmospheric parameters of π 1 Gruis (a very evolved ...