jan 222013
 
Evidence for Asteroid Belt Around the Star Vega

  Astronomers have discovered what appears to be a large asteroid belt around the star Vega, the second brightest star in northern night skies. The scientists used data from NASA’s Spitzer Space Telescope and the European Space Agency’s Herschel Space Observatory, in which NASA plays an important role. This artist’s concept illustrates an asteroid belt [continue reading]

dec 122012
 
Vega Older Than Thought! What Does That Mean for Other Stars?

  Vega, a star astronomers have used as a touchstone to measure other stars’ brightness for thousands of years, may be more than 200 million years older than previously thought. That’s according to new findings from the University of Michigan. Vega, the brightest star in the constellation Lyra. Image Credit: John Monnier (University of Michigan) The [continue reading]