In 1604, the astronomer Johannes Kepler watched a bright, apparently new star in the Ophiuchus constellation. Almost 400 years later, NASA's three orbiting observatories - the Hubble Space Telescope, the Spitzer Space Telescope and the Chandra X-ray Observatory - provided a composite image showing the expanding remains of this supernova in our galaxy.

Pictured here, blue and green colours show the emission of high- and low-energy X-rays as observed by Chandra, the optical emission detected by Hubble is in yellow and the infrared image of Spitzer is overlayed in red.
(Image: NASA/ESA/JHU/R Sankrit and W Blair.)

Compiled by Marc Türler, INTEGRAL Science Data Centre and Geneva Observatory