23 September 2005
Vol 309, Issue 5743

About The Cover

Cover image expansion

COVER A bow shock around a young star in the Orion nebula, imaged by the Hubble Space Telescope. A similar interstellar shock marks the edge of our solar system. Voyager 1 is heading toward this edge and recently crossed a second inner "termination shock" where the solar wind abruptly slows as it approaches the interstellar medium. Four Reports and a Viewpoint in this issue describe the crossing and data from the heliosheath, the region between the termination shock and interstellar space. See page 2015. [Image: NASA and the Hubble Heritage Team (STScI/AURA)]