Astronomers using ESA’s Herschel and NASA’s Spitzer space telescopes have detected surprisingly rapid changes in the brightness of embryonic stars within the well-known Orion Nebula. Images from Herschel’s far-infrared instrument and two of Spitzer’s instruments working at shorter wavelengths give .
How to Learn a Star's True Age
For many movie stars, their age is a well-kept secret. In space, the same is true of the actual stars. Like our Sun, most stars look almost the same for most of their lives. .