Discovery Announced of Two Most Distant Objects
X-ray Images of Quasars Confirm Results of Penn State Graduate Student
Image
This illustration demonstrates the possible different points-of-view from which astronomers observe quasars with X-ray satellites.
Astronomers Use Chandra Images to Craft Unprecedented Detail of Nearby Galaxy
Image
An x-ray image shows the inner portion of the Circinus Galaxy, with north at the top of the image and east to the left.
Chandra Examines Black Holes Large and Small in Nearby Galaxy
Image
An x-ray image shows the inner portion of the Circinus Galaxy, with north at the top of the image and east to the left.
Penn State Graduate Student Featured Today at NASA Televised Press Conference
Scientists Discover Supernova May Control Activity in the Center of Our Galaxy
Image
Scientists Discover Supernova May Control Activity in the Center of Our Galaxy
Simultaneous Stellar Explosions Create Swiss-Cheese Structure in Distant Galaxy
Image
Simultaneous Stellar Explosions Create Swiss-Cheese Structure in Distant Galaxy
Penn State Astronomer Contributes to Space.com's Effort to Define Weirdest Things in Space
X-rays from the Most Distant Quasar Captured with the XMM-Newton Satellite
Image
European Space Agency (ESA)
Chandra Discovers the X-ray Signature of a Powerful Wind from a Galactic Microquasar
Image
Artist's impression of an X-ray binary system like Circinus X-1.
Subscribe to Astronomy and Astrophysics