71.   Two shuttle astronauts ventured out into open space Monday to install a new, stronger solar wing on the Hubble Space Telescope.

72.   Two shuttle astronauts ventured out on a spacewalk Monday and successfully installed the first of two new, powerful solar wings on the Hubble Space Telescope.

73.   Two spacewalking astronauts quickly tightened a slack solar wing on the international space station on Thursday.

74.   Unlike the Russian-built Zarya control module, which gets its energy from the sun, Unity lacks solar wings and so must rely on Zarya for power.

75.   Using just a hook and their gloved hands, two spacewalking astronauts tightened an overly slack solar wing on the international space station Thursday with surprising ease.

76.   While atop the truss, they were instructed to use their helmet cameras to provide engineers with close-up views of loose tension cables on the right solar wing.

77.   Only one solar wing was supposed to be replaced Monday.