Atlas 5/Cygnus post-launch news conference

A NASA space telescope studying X-ray emissions from a nearby galaxy has discovered the brightest pulsar ever detected, the fast-spinning remnant of a collapsed star that shines so intensely it was initially mistaken for a massive black hole, a possible “missing link” between compact stellar-mass black holes and the unseen monsters lurking at the cores of many galaxies.

Russian ground controllers decided Tuesday to delay the docking of a Progress supply freighter to the International Space Station until Thursday after telemetry signals indicated two radar navigation antennas may not have deployed following the ship’s launch from Kazakhstan.

A commercial Cygnus cargo freighter arrived at the International Space Station Tuesday two-and-a-half days after launching from Virginia’s Eastern Shore, delivering a new British-made high-speed communications antenna and more than 7,000 pounds of other experiments and equipment.